Mark Baisley | |
|---|---|
Baisley in 2024 | |
| Member of the Colorado Senate from the 4th district | |
| Assumed office January 9, 2023 | |
| Preceded by | Jim Smallwood |
| Member of the Colorado House of Representatives from the 39th district | |
| In office January 4, 2019 – January 9, 2023 | |
| Preceded by | Polly Lawrence |
| Succeeded by | Brandi Bradley |
| Personal details | |
| Born | Mark Allan Baisley August 2, 1955 Hastings, Minnesota, U.S. |
| Party | Republican |
| Spouse | Maryann |
| Education | Columbia College, Missouri (BS) University of Colorado, Colorado Springs (attended) |
| Website | State senate website Campaign website |
Mark Allan Baisley (born August 2, 1955) is an American politician who is a state senator from Roxborough Park, Colorado. A Republican, Baisley represents Colorado's 4th Senate district. Previously, he represented Colorado House of Representatives District 39, which encompassed parts of Douglas County and all of Teller County. He was the Republican nominee in the 2026 U.S. Senate election in Colorado, but would be defeated by incumbent Democrat John Hickenlooper.
Baisley earned a bachelor's degree with dual degrees in computer information systems and business administration from Columbia College, Missouri in 1993. He currently works as the president of Slipglass, Inc., an engineering software firm. Baisley has been married to his high school sweetheart Maryann for more than 45 years. Maryann and Baisley, are the parents of four children and they also seven grandchildren.
Baisley was first elected as a state representative in the 2018 general elections. In that election, he defeated his Democratic and Libertarian party opponents, winning 62.61% of the vote.
Baisley was re-elected to the state house in 2020.
In 2022, Baisley ran for a seat in the Colorado State Senate. Specifically, he ran to represent Colorado's 4th Senate district. In the general election, he defeated his Democratic Party opponent, winning 60.84% of the vote.
In March 2025, Baisley announced his candidacy for the 2026 Colorado gubernatorial election. On January 5, 2026, he suspended his campaign for Governor and announced his candidacy for the 2026 United States Senate election instead. Baisley was the only candidate to receive at least 30% support from the Republican State Assembly, allowing him to advance to the primary unopposed. According to the election law organization States United Action, Baisley has promoted conspiracies theories and misinformation about the legitimacy of elections, especially the 2020 presidential election.
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Republican | Mark Baisley | 29,289 | 62.61% | |
| Democratic | Kamala Vanderkolk | 16,167 | 34.56% | |
| Libertarian | Tony Gross | 1,325 | 2.83% | |
| Total votes | 46,781 | 100% | ||
| Republican hold | ||||
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Republican | Mark Baisley (incumbent) | 37,657 | 63.04% | |
| Democratic | Ian Chapman | 20,257 | 33.91% | |
| Libertarian | Bonnie Pyle | 1,823 | 3.05% | |
| Total votes | 59,737 | 100% | ||
| Republican hold | ||||
| Party | Candidate | Votes | % | ||
|---|---|---|---|---|---|
| Republican | Mark Baisley | 55,595 | 60.84% | ||
| Democratic | Jeff Ravage | 35,789 | 39.16% | ||
| Total votes | 91,384 | 100% | |||
| Republican hold | |||||