FairVote's biennial report Monopoly Politics presents an in-depth analysis of U.S. House elections and the structural origins of the polarization, partisan bias, and striking lack of competition that plague Congressional politics. Accompanying the 2018 report are projections for the 2018 U.S. House races made more than a year before Election Day, illustrating the consistent absence of meaningful competition in nearly all districts.
The following interactive map presents a wealth of data on representation and competition from the 2014 Monopoly Politics report. For more up-to-date data, see the tabs below.
2018 Projections (released February 21, 2017): View Online
Since 1997, FairVote has released projections for U.S. House elections using a model that relies only on previous election results. These projections have been remarkably accurate. Months before the 2016 election, we projected outcomes in 361 U.S. House races, and were correct in all 361. Looking to 2018, we make high confidence projections for the 2018 U.S. House election in 378 races, and expect a similar level of success. Our projections were last updated for retirements on January 10, 2018.
Our 2018 projections reveal:
While the model’s accuracy could likely be improved by incorporating data from public opinion polls, on the candidates, or on their campaigns, the accuracy of our projections in the absence of such information illustrates an important truth about elections under our current system: In the vast majority of cases, the particulars of candidates and campaigns have little impact on the end result. Uncompetitive races mean that outcomes are essentially predetermined, leaving voters without meaningful choices or a compelling reason to go to the polls.
The full projections can be found in the spreadsheets linked above. Users also can also use these sheets to make their own projections, by adjusting the values for the national preference between the major parties (we use a 50-50 projection), and the average advantage earned by incumbents (we give an average "incumbency bump" of 3.3%).
Monopoly Politics 2018 can be downloaded here.
Our interactive spreadsheet is available here.
Click on your state to find out how uncompetitive your U.S. House election will be in 2018.
|Alabama||Hawaii||Massachusetts||New Mexico||South Dakota|
|Florida||Maine||New Hampshire||Rhode Island||Wisconsin|
|Georgia||Maryland||New Jersey||South Carolina||Wyoming|
Follow the links below for previous editions of the Monopoly Politics report. While the projection methodology has been refined over the years, it has remained remarkably accurate since its inception, with near perfect accuracy in the 75% to 85% of House races that can be projected with high confidence in each election.
The projections are based on the innovative "district partisanship" metric introduced in the first Monopoly Politics report in 1997. District partisanship measures the partisan lean of each congressional district by comparing how each major party presidential candidate performed in the district relative to how they performed in the national popular vote.