US House districts by competitiveness, computed by Poliful from each district's most recent general election margin on file — not a licensed rating. Click a district for its candidates.
Ratings are computed from a single most-recent general election result per district (MIT Election Data + Science Lab, Harvard Dataverse DOI 10.7910/DVN/IG0UN2) rather than averaged across cycles, to avoid blending a district's boundaries from before and after redistricting under one label. Senate and presidential races are not yet rated.