Now that all 50 states have finalized new lines for the 2022 elections, the Cook Political Report is pleased to introduce the 25th Anniversary edition of the Cook Partisan Voting Index (Cook PVI℠) for all 50 states and 435 congressional districts, reflecting new post-redistricting boundaries. First introduced in 1997, the Cook PVI measures how each state and district performs at the presidential level compared to the nation as a whole.
A Cook Partisan Voting Index score of D+2, for example, means that in the 2016 and 2020 presidential elections, the state or district performed about two points more Democratic in terms of two-party vote share than the nation did as a whole, while a score of R+4 means the state or district performed about four points more Republican. So, for example, if the national popular vote was 50% Democrat and 48% Republican, a district or state with a PVI of R+4 should expect to see a Republican vote share more like 52%. If a state or district performed within half a point of the nation in either direction, we
Our subscribers have first access to individual race pages for each House, Senate and Governors race, which will include race ratings (each race is rated on a seven-point scale) and a narrative analysis pertaining to that race.