List of governors of Colorado

Colorado's U.S. Senate contest pits Democratic incumbent John Hickenlooper, seeking a second term after a career as Denver mayor and governor, against Republican state Sen. Mark Baisley of Woodland Park. Baisley campaigns on fiscal restraint, government accountability, property tax reform and expanding first-time homebuyer access, drawing on his aerospace engineering background and work on tech and defense issues in the legislature. Hickenlooper points to his record capping insulin costs, expanding Medicare drug price negotiation, and opposing Trump administration policies on public lands, tariffs, and healthcare cuts, while emphasizing water and healthcare expertise from his time as governor.

Colorado has trended Democratic in recent federal elections, though Republicans have won statewide Senate races before — Cory Gardner held the seat until Hickenlooper unseated him in 2020. With Democrats and Republicans nearly even in active voter registration and unaffiliated voters forming the largest bloc, the race is being watched as a test of whether Republicans can flip a statewide seat amid broader national political headwinds.