In August of 1997, the Cook Political Report introduced the Cook Partisan Voting Index (Cook PVI) to provide a more accurate picture of the competitiveness of each of the 435 congressional districts.
Republicans win majority by cutting deeper into hostile turf; number of split districts remains low historically.KEY POINTS FROM THIS ARTICLE Republicans won a slim House majority at least in part by winning more victories in districts that Joe Biden carried than Democrats did in districts carried by Donald Trump. There are currently slated to be 18 Republicans in Biden seats and just 5 Democrats in Trump seats. Democrats used to win more crossover districts, but Republicans have now won more in 6 of the last 7 elections as the overall number of crossover districts has generally declined. It is common for the opposition party in Congress to add to their roster of crossover districts in a midterm, and that’s exactly what happened in 2022, despite Republicans having a disappointing election overall.
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