Douglas
Mangeris
Libertarian challenger Douglas Mangeris seeks Colorado's 4th Congressional District seat in 2026
- sources
- 7
- positions
- 4
- endorsements
- 0
Background
Douglas Mangeris is the Libertarian Party candidate for Colorado's 4th Congressional District in the U.S. House election scheduled for November 3, 2026. He is a challenger; the seat is currently held by Republican Lauren Boebert. 128
Mangeris describes himself as a commercial construction superintendent at Hausmann Construction, based in Loveland, Colorado. His professional background also includes experience with Brinkmann Constructors, TCC Corporation, and Colorado Concepts. He holds an ICC Class A general building contractor certification and is a federal firearms licensee. 1
In addition to his construction career, Mangeris serves as vice president of the Habitat for Humanity of Loveland board and is the founder of CheckYourRepresentative.com. No prior elected office is identified in available sources. He filed for the same congressional seat in 2024 but did not appear on that year's general-election ballot. 124
At a glance
- Party
- Libertarian
- Running for
- U.S. House · District 4, Colorado
- Election
- Nov 3, 2026
- Current office
- Commercial construction superintendent at Hausmann Construction
- Website
- mangeris4thepeople2026.vote(opens in a new tab)
Where they stand
Each position links to the page it was drawn from. Quotes are verbatim.
Timeline
- Oct 9pollPoll shows Mangeris at 9% in CO-04, with Boebert at 45% and Laubacher at 40%
An Impact Research poll conducted September 21–24 among 403 likely district voters found Boebert at 45%, Laubacher at 40%, and Mangeris at 9%. The poll was conducted for the Invest in Tomorrow Coalition, backed by clean-energy executives. Reuters reported the memo provided neither a margin of error nor a partisan breakdown.
Is Boebert in trouble in re-election bid? Poll shows small lead · Oct 9, 2026 (opens in a new tab) - Oct 6filingFEC filings show no reported receipts or disbursements for Mangeris through August 31
A Smarter.Vote candidate-profile page reported no FEC-reported receipts or disbursements for Mangeris's listed committees for the 2025–26 cycle as of August 31. No cash-on-hand total was provided.
Douglas Mangeris (L) – CO-04 House 2026 | Smarter.Vote · Oct 6, 2026 (opens in a new tab) - Oct 3newsDenver Post reports Mangeris did not return its candidate questionnaire
The Denver Post noted that both Lauren Boebert and Douglas Mangeris did not return its candidate questionnaire, so the paper's Q&A did not include their answers. The reason for nonresponse was not established.
Colorado U.S. House District 4 candidate Q&A - The Denver Post · Oct 3, 2026 (opens in a new tab) - Oct 1newsMangeris publishes policy positions in Coloradoan candidate questionnaire
In responses published by the Coloradoan, Mangeris described his main proposal as using his CheckYourRepresentative app to let verified district constituents direct his votes on bills. He also named congressional term limits, tracking and justifying federal spending, limiting bills to 50 pages, and delivering water to rural Weld County and farm communities as priorities.
Colorado election: Q&A with candidate Douglas Mangeris - Yahoo · Oct 1, 2026 (opens in a new tab) - Sep 25newsCPR voter guide notes Mangeris appearing on general-election ballot for the first time as Libertarian
Colorado Public Radio reported Mangeris was on the general-election ballot for the first time as the Libertarian candidate. CPR quoted him saying he was 'tired of watching career politicians in Washington and Denver rob us blind while rural Colorado gets left behind,' and summarized his priorities as rural water, accountability for official votes and spending, and term limits.
4th Congressional District third-party candidates · Sep 25, 2026 (opens in a new tab) - Sep 4filingColorado Secretary of State certifies candidate list with Mangeris on general-election ballot
A published race guide indicates the Secretary of State's candidate list was certified on September 4, with Douglas Mangeris listed among the three candidates on the CO-04 general-election ballot.
Colorado's 4th congressional district — 2026 candidates | Ballot ... · Sep 14, 2026 (opens in a new tab) - Jul 28newsBallot order for CO-04 determined by lot drawing at Colorado Secretary of State's office
The Denver Post reported that ballot order for Colorado's 4th Congressional District was determined by a lot drawing at the Secretary of State's office on July 28, placing Mangeris among the three candidates on the ballot.
Colorado U.S. House District 4 candidate Q&A - The Denver Post · Oct 3, 2026 (opens in a new tab)
Campaign finance
Totals filed with the Federal Election Commission for the 2026 election cycle.
- Raised
- $0
- Spent
- $0
- Cash on hand
- $0
Reporting date not available. ↳ FEC record H4CO04215(opens in a new tab)
Sources 7
- [1] Is Boebert in trouble in re-election bid? Poll shows small lead(opens in a new tab) Oct 9, 2026
- [2] Douglas Mangeris (L) – CO-04 House 2026 | Smarter.Vote(opens in a new tab) Oct 6, 2026
- [3] DouglasMangeris(opens in a new tab) Oct 4, 2026
- [4] Colorado U.S. House District 4 candidate Q&A - The Denver Post(opens in a new tab) Oct 3, 2026
- [5] Colorado election: Q&A with candidate Douglas Mangeris - Yahoo(opens in a new tab) Oct 1, 2026
- [6] 4th Congressional District third-party candidates(opens in a new tab) Sep 25, 2026
- [7] Colorado's 4th congressional district — 2026 candidates | Ballot ...(opens in a new tab) Sep 14, 2026