Cook Political Report's Partisan Voter Index
The data in the report is compiled by POLIDATA with assistance from the National Journal and Cook Political Report.
There are three primary sets of data included in the PVI:
- The district PVI and rank relative to the rest of the country.
- How the district voted in the 2008 presidential election
- How the district voted in the 2004 presidential election
For example, The 6th congressional district of Alabama is a R+28, which is the 3rd most Republican district. John McCain (R) won the district 75-25 percent over Barack Obama in 2008. George W. Bush won the district 78-22 percent over John Kerry (D) in 2004.
According to the index, there are:
- 213 Republican wins
- 158 Democratic wins
- 62 open seats
- 2 incumbent vs. incumbent matchups
- The most Democratic district is the 15th congressional district of New York, which is D+41
- The most Republican district is the 13th congressional district of Texas, which is R+29
- Cook Political Report Partisan Voting Index Districts of the 113th Congress: 2004 & 2008
- Cook Partisan Voter Index on Wikipedia
- Politico "Charlie Cook's PVI," April 10, 2009
- RedState "New Cook PVIs Show Big Opportunities for Conservatives in the House," October 11, 2012
- Swing State Project "Just what is the Partisan Voter Index (PVI)?" November 16, 2008
- Cook Political Report "Partisan Voting Index Districts of the 113th Congress: 2004 & 2008" Accessed October 2012