U.S. Rep. Ken Buck joined all of Colorado’s Democratic U.S. House members in voting Tuesday for the successful ouster of Speaker Kevin McCarthy — a first in congressional history.

The Republican from California lost a 216-210 vote to vacate the speaker’s chair, with eight hard-right Republicans, including Buck, joining 208 Democrats. The vote was prompted by discord within the Republican caucus that reached a climax over the weekend over McCarthy’s decision to work with Democrats to keep the federal government open, averting a shutdown.

Here is how Colorado’s House delegation voted Tuesday afternoon on the motion to oust McCarthy:

Diana DeGette, D-Denver: Yes
Joe Neguse, D-Lafayette: Yes
Lauren Boebert, R-Silt: No
Ken Buck, R-Windsor: Yes
Doug Lamborn, R-Colorado Springs: No
Jason Crow, D-Aurora: Yes
Brittany Pettersen, D-Lakewood: Yes
Yadira Caraveo, D-Thornton: Yes