Interactive visualization
See which U.S. House seats are expected to be open in the 2026 election and how those districts voted in 2024. The map uses 2024 congressional district boundaries and shows the last election margin (regular or special) for each seat where the incumbent is not running for reelection. To make small and densely packed districts easier to see, some districts are visually enlarged while preserving their location and relationship to the surrounding map when filtering on a subset of districts. Updated periodically following following confirmed primary results.
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