House Republican cohesion ticked up just slightly last year, from a historically bad 2023, while Senate Democrats saw record success on votes that split the parties as both chambers dealt with narrow margins that left diminishing room for dissent.
CQ Roll Call’s annual vote studies found that the House GOP majority prevailed on 76.6 percent of party unity votes, the second-lowest rate since 2000. Still, that was up from 63.7 percent in 2023, which represented the lowest winning percentage for a majority party in the chamber since the Democrats during President Ronald Reagan’s first term.
Meanwhile in the Senate, topline data showed Democrats prevailing on 94.5 percent of the unity votes in 2024. That’s the highest rate on record for a majority party in the Senate, which Republicans went on to flip in last fall’s elections.
