See which House districts have the biggest shifts this midterm election

Control of every U. S. House seat is being decided this year, and CNN is using the contests as a gauge of public sentiment nearly two years into President Donald Trump's second term. The network's yardstick is how much each district's vote has moved relative to its 2024 presidential result, which gives a rough read on whether the electorate is drifting toward Democrats or Republicans.

The method works like this: suppose Trump won a district by 10 points but the winning Republican House candidate leads by only 4. That district would be counted as having moved 6 points in the Democrats' direction. CNN cautions that the comparison has limits, since House races differ from presidential contests, and incumbency, local issues, individual candidates and lower midterm turnout all play a part. Still, across hundreds of districts, the shifts offer one of the better indications of the country's direction.

The graphics refresh automatically as counting proceeds on election night. Because early returns can mislead and margins can swing sharply, the map displays only districts where at least 30% of the expected vote has been tallied.

Summarized by PolitiKool from CNN’s reporting. Read the full story at CNN →