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2026 candidates we're tracking in CO-4
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Lauren Boebert
Republican
Incumbent
Boebert is a member of the U.S. House representing Colorado's 4th District and a mother of four sons, per the campaign site. She has volunteered mentoring incarcerated women at the Garfield County Jail and serves on the House Oversight Committee, per the campaign site. She backed passage of the Pueblo Jobs Act in 2023, which the campaign site says is projected to create 1,000 jobs in southern Colorado, per the campaign site.
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Eileen Laubacher
Democratic
Eileen Laubacher is the Democratic candidate for Colorado's 4th Congressional District on the November 3, 2026 ballot, per the Secretary of State's 2026 General Election candidate list. Laubacher is a retired Navy Rear Admiral who served on the White House National Security Council, per Colorado Public Radio. Laubacher is the Democratic nominee challenging Republican incumbent Rep. Lauren Boebert in Colorado's 4th Congressional District, per Colorado Public Radio.
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Douglas Mangeris
Libertarian
Douglas Mangeris is the Libertarian candidate for U.S. House in Colorado's 4th District, per his campaign site. His campaign site does not provide additional biographical or career details.
About this race
Colorado's 4th Congressional District elects one member of the U.S. House of Representatives to a two-year term. Every House seat in the country is on the ballot in 2026. The Colorado primary is Tuesday, June 30, 2026, and the general election is Tuesday, November 3, 2026.