In 2023, many of the party unity votes that drove down the GOP’s success rate came on floor amendments to appropriations bills. Of the 515 House party unity votes, 54 of them (more than 10 percent) were on measures to reduce salaries for officials ranging from the White House press secretary to the acting administrator of the National Highway Traffic Safety Administration. Roughly 81 percent of the roll call votes cast in 2023 were unity votes, with the majority Democrats prevailing 91.5 percent of the time. Most of the unity votes were on nominations or on procedural votes to set them up, meaning essentially duplicate votes boosted the average. Twelve of the 24 times that Senate Republicans prevailed on party unity votes came on votes related to overturning regulations adopted by the executive branch or the District of Columbia municipal government.