Republican Party primary for U.S. House District 4, June 30, 2026 (Colorado semi-open primary; unaffiliated voters may vote one party ballot). Candidates per the Colorado Secretary of State 2026 primary candidate list (https://www.coloradosos.gov/pubs/elections/vote/files/2026/2026PrimaryCandidateListOfficial.xlsx), which lists every candidate on that primary ballot.