Once the ink is dry on new congressional maps, the real political battles will begin.

The Cook Political Report’s PollTracker is back. This thoughtfully curated polling aggregator calculates a rolling daily average of Trump’s overall approval rating as well as his standing within key demographic subgroups.

The Cook Political Report is pleased to introduce the 2025 Cook Partisan Voting Index (Cook PVI℠) for all 435 congressional districts. 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.

Trusted and deeply sourced, our editors provide analysis of proposed new maps, the candidates who will run in reshaped districts, and the long-term consequences of redrawn congressional lines for incumbents, potential challengers, and the balance of power in the House.

Unlock 40 years of the Cook Political Report. Subscribers now have access to everything in our vault — from the first edition of The Cook Political Report in 1984 to today’s online analysis.