Kenneth Robert Buck is an American lawyer and politician who represented Colorado's 4th congressional district in the United States House of Representatives from 2015 until his resignation in 2024. Buck served as chair of the Colorado Republican Party, from 2019 to 2021. Formerly the District Attorney for Weld County, Colorado, Buck ran unsuccessfully for U.S. Senate in 2010, narrowly losing to Democrat Michael Bennet.
Official portrait, 2014
Buck in 2010
Ken Buck speaking at the 2017 Conservative Political Action Conference (CPAC) in National Harbor, Maryland.
Colorado's 4th congressional district
Colorado's 4th congressional district is a congressional district in the U.S. state of Colorado. Located in the eastern part of the state, the district encompasses most of the rural Eastern Plains as well as portions of the Colorado Front Range including Loveland, Highlands Ranch, Castle Rock, and Parker.
Image: TAYLOR, EDWARD T. REPRESENTATIVE LCCN2016861347 (cropped)
Image: Robert F. Rockwell (Colorado Congressman)
Image: Wayne N. Aspinall
Image: Wayne Allard, official photo portrait 2