Colorado Republican Governor nominee?
$1.2M
JUL 7, 2026Primary Election
Party selects its nominee.
Overview
Current roleState Senator
PartyRepublican
Political ideologyConservative Republican
GenderMale
LocationColorado
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BackgroundPolitician
EducationB.S., Computer Information Systems and Business Administration, Columbia College (Missouri)
Notable personal detailsMark Baisley is a Republican Colorado state senator representing Senate District 4 (elected in 2022; serving since 2023) and previously served in the Colorado House of Representatives for District 39. He launched a campaign for the 2026 U.S. Senate election in Colorado after ending a run for governor. He has a technology and national security/cybersecurity background and earned a B.S. in Computer Information Systems and Business Administration from Columbia College (Missouri).
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Positions
Economy & Taxes
Opposes higher taxes and favors limited government to keep more income in residents' hands; supports resisting new government spending and prioritizing affordability through market-driven solutions. Has voted against at least one large state budget appropriation.
Healthcare
Supports market-based healthcare reforms that increase patient choice and reduce insurer/ government control, favoring policies that let patients shop for services and approve treatments rather than rely on insurance bureaucrats. Has sponsored or supported legislation and votes consistent with conservative, market-oriented approaches to health policy, including opposing mandates to expand insurance coverage for specific drugs and sponsoring bills that prioritize state subsidies for lawfully present residents.
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Immigration & Border
The candidate has sponsored legislation to require local governments and law enforcement to cooperate with federal immigration authorities and to restore pre-2006 restrictions that limit local policies shielding undocumented immigrants. He frames the proposals as aimed at enabling reporting to ICE and deportation of noncitizens who commit crimes. The legislative effort emphasizes strengthening enforcement rather than expanding legal pathways or asylum protections.
Abortion & Reproductive Rights
Mark Baisley opposes expanded legal abortion rights in Colorado and has acted to restrict or abolish abortion access. He opposed the Reproductive Health Equity Act and voted against measures to enshrine abortion rights, and he is listed as a sponsor on legislation characterized as abolishing abortion in Colorado.
Climate & Energy
The candidate votes in favor of including nuclear energy as a recognized clean energy resource and has voted against state building decarbonization measures; his environmental scorecard from Conservation Colorado is low. His committee assignments include Transportation & Energy, and his legislative record shows opposition to regulatory decarbonization measures while supporting nuclear as part of the clean-energy definition.
Public Safety & Guns
Mark Baisley has opposed recent Colorado legislation to crack down on so-called “ghost guns,” arguing such measures infringe on constitutional rights and proposing amendments to limit enforcement actions. His public comments and floor actions in the State Senate position him against new gun-registration or restriction measures like the ghost-gun bills considered in 2023–2025.
News
Mark Baisley is in the news as the Republican candidate in Colorado’s U.S. Senate race, with the June 30 primary approaching and ballots already being mailed. Recent coverage says his GOP primary is unopposed, while the Democratic side features Julie Gonzales and John Hickenlooper. Broader election reporting around the race has focused on voting rules, turnout, and national issues like the economy and the SAVE Act, but no major new Baisley-specific development is reported.
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Endorsements
Endorsers of Mark Baisley for Colorado Republican Governor nominee?
Former Representative Neville
Former elected official
Former Representative Neville endorsed Mark Baisley.
Fundraising
Latest report: Cycle 20262026
LatestCycle 2026
Source: FEC
New updates coming soon
We're monitoring and will update when new data impacts the race.
- Polls