Do single-member districts favor a two party system?

Single Member Districts

The single member plurality election is the most common and best-known electoral system currently in use in America. It is used to elect the U.S. House Representatives, as well as many state and local legislatures. Under single member plurality systems, an area is divided into a number of geographically defined voting districts, each represented by a single elected official. Voters can only vote for their district’s representative, with the highest vote-getter winning election, even if he or she has received less than half of the vote.

In addition to the problems endemic to all winner-take-all systems, single member plurality results create some specific difficulties of their own. First, wherethe boundaries of districts are drawn can have a huge effect on who is likely to win election. As a result, gerrymandering to protect incumbents or weaken political enemies is common under single member plurality systems. Second, single member plurality elections are prone to the spoiler dynamic. Where more than two viable candidates run and split the vote within a district, the “winner” of an election can often be the candidate whom the majority of voters liked least. Generally, parties will limit the number of candidates running to avoid this scenario, leaving voters with minimal choice. These dynamics essentially mean that in the vast majority of single member plurality elections, voters have no effective choice, but to ratify the candidate of the majority party in their district.

Single member majority systemsare identical to single-member plurality systems, except that they use two round runoffs or instant runoff voting to ensure that the winner of an election has the support of the majority of voters. While this eliminates the spoiler problem, it does nothing to stop the negative effects of gerrymandering or the limitations inherent in making geography the primary districting critera. In some cases these systems can also make it harder for communities of color to win election.


Page 2

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 3

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 4

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 5

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 6

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 7

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 8

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 9

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 10

FairVote Triggering a National Discussion on Electoral Reform

Do single-member districts favor a two party system?

As an innovative think tank, FairVote pushes the boundaries of conventional wisdom in seeking electoral rules that respect every vote and every voice. Communications director Paul Fidalgo works with our analysts to make sure our ideas enter high-profile debate. See Paul’s new Innovative Analysis on instant runoff voting's apparent link to decreasing the influence of money and more positive campaigning, major new op-eds from David Segal, Rob Richie and Adam Fogel, and Richie’s lead piece in a special series on the Electoral College in the San Diego Union-Tribune. Meanwhile, the Nation’s Katrina vanden Heuvel features FairVote in her new column touting the National Popular Vote plan.

Links:

[Innovative Analysis on IRV: "Good Things Come to Those Who Rank"]
[Rob Richie on National Popular Vote in the San Diego Union-Tribune]
[David Segal on Senate vacancies in the Baltimore Sun]
[Adam Fogel on expanding DC voter participation in the Washington Post]
[Rob Richie and Rep. Bill Herbkersman on IRV for primaries in The State]
[Katrina vanden Heuval’s editorial on the Electoral College and NPV]


Page 11

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 12

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 13

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 14

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 15

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 16

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 17

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 18

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 19

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 20

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 21

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 22

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 23

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 24

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 25

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.


Page 26

August 10th 2009
Commentary: A cure for the political nomination processCleveland Plain Dealer

FairVote's Rob Richie and Paul Fidalgo offer a way to give everyone a say in presidential nominations while retaining the valuable state-by-state evaluation process. This piece also ran in McClatchy's newswire.

October 29th 2009
Plurality voting rule is the real election spoilerBaltimore Sun

In the midst of 3-way races in NJ and NY, FairVote board member and 1980 presidential candidate John Anderson makes the case for IRV over our flawed plurality system.

October 19th 2009
A better election systemLowell Sun

Election expert Doug Amy explains how choice voting can "inject new blood" into the elections of Lowell (MA), and give voters a greater incentive to participate.

October 19th 2009
Mandatory Voting? Automatic Registration? How Un-American!Huffington Post

President of Air America Media, Mark Green, explains why Instant Runoff Voting, Automatic Registration and Mandatory Voting are not only important but could lead to a more democratic society.