Former member of Congress

Ken Buck

Rep. for CO-04, Republican, in the 118th Congress (2023–2024).

No longer in Congress. This page shows their record in the past Congresses on this site, with the seat and party they held then.

Time in office

Every stretch of service in Congress, from the congress-legislators records.

OfficeSeatPartyFromToCongresses
U.S. House, ColoradoCO-04RepublicanJan. 6, 2015March 22, 2024114th–118th

Voting record by President

All the votes on this site from their time in office, added up under the President in office on the day of each vote. One President's figures are never combined with another's, and Trump's two terms are separate. A new President can take office partway through a Congress, so these can differ slightly from a Congress's own figures.

PresidentCongressesVotes with the PresidentParty loyaltyMissed votes
Joseph R. Biden Jr. (2021–2025)118th, 117th12% (21 of 177)92% (994 of 1,076)6% (105 of 1,783)
Donald J. Trump (2017–2021)117th, 116th, 115th86% (144 of 167)95% (1,304 of 1,370)7% (142 of 2,115)
Barack Obama (2009–2017)115th, 114th11% (16 of 147)97% (941 of 975)5% (65 of 1,377)

Every Congress

Each row is that Congress alone, and the President score is for the President of that time. Missed votes are left out of both scores.

CongressSeatPartyParty loyaltyVotes with the PresidentMissed votes
118th Congress (2023–2024)House CO-04Republican88%Biden: 15%6%
117th Congress (2021–2022)House CO-04Republican97%Trump: –; Biden: 10%6%
116th Congress (2019–2020)House CO-04Republican97%Trump: 84%12%
115th Congress (2017–2018)House CO-04Republican94%Obama: –; Trump: 90%2%
114th Congress (2015–2016)House CO-04Republican96%Obama: 10%5%

Where they broke ranks, 118th Congress

Votes where they went against most of their party on a vote that split the parties (64), or against the position President Biden took publicly before the vote (53).

Where they broke ranks, 117th Congress

Votes where they went against most of their party on a vote that split the parties (19), or against the position President Trump / Biden took publicly before the vote (104).

Where they broke ranks, 116th Congress

Votes where they went against most of their party on a vote that split the parties (19), or against the position President Trump took publicly before the vote (15).

Where they broke ranks, 115th Congress

Votes where they went against most of their party on a vote that split the parties (46), or against the position President Obama / Trump took publicly before the vote (7).

Where they broke ranks, 114th Congress

Votes where they went against most of their party on a vote that split the parties (34), or against the position President Obama took publicly before the vote (131).