Colorado voters head into Tuesday primaries to choose nominees for governor, U.S. Senate and House races, with polls closing at 7 p.m. MT.
The marquee contest is the Democratic governor's race between Sen. Michael Bennet and Attorney General Phil Weiser, a choice that could also reshape the U.S. Senate if Bennet later vacates his seat.
About 327,000 Democratic ballots and 228,000 Republican ballots had already been cast by Thursday in the mail-heavy state, where roughly 4.4 million voters are registered.
Fundraising has split the top races: Weiser raised about $6.5 million to Bennet's $4.8 million, while Republican Victor Marx led his field with $2.8 million and heavy outside-group spending.
The primaries will set November matchups in a state Democrats have held since 2007, including the competitive 8th House District that could help decide control of the chamber.