Ken Buck

Republican

Opponents (Received at least 1% of vote)

Ryan McGonigal

American Constitution • 2022 General

Robert Lewis

Republican • 2022 Republican Primary

Ike McCorkle

Democratic • 2020 General

Bruce Griffith

Libertarian • 2020 General

Karen McCormick

Democratic • 2018 General

Bob Seay

Democratic • 2016 General

Vic Meyers

Democratic • 2014 General

Jess Loban

Republican • 2014 General

Grant Doherty

Unaffiliated • 2014 General

Scott W. Renfroe

Republican • 2014 Republican Primary

Barbara J. Kirkmeyer

Republican • 2014 Republican Primary

Steve Laffey

Republican • 2014 Republican Primary

Michael F. Bennet

Democratic • 2010 General

Bob Kinsey

Green • 2010 General

Maclyn "Mac" Stringer

Libertarian • 2010 General

Jason Napolitano

Independent Reform Party • 2010 General

Jane Norton

Republican • 2010 Republican Primary

Tom Quammen

Republican • 2004 Republican Primary