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Chamber composition

Party breakdown per chamber, computed from the tracked member roster. Counts grow as live data lands; figures here reflect the current roster.

U.S. Senate

100 seats tracked

U.S. House

437 seats tracked

Senate seats up in 2026 (Class II)

Senate seats are elected for six-year terms staggered into three classes. The 33 Class II seats below are on the ballot in 2026.