DENVER (AP) — Colorado voters are taking the first step to decide which major party candidates get to the June 26 primaries.

Republicans and Democrats gather at caucuses across the state Tuesday night.

They'll choose delegates backing candidates for state, congressional and local office. The results are non-binding — but they're considered a measure of candidates' strength and momentum.

State Republicans don't hold a straw poll in non-presidential election years.

Democrats do, and they'll release results for their gubernatorial candidates on Wednesday.

Former state treasurer Cary Kennedy, U.S. Rep. Jared Polis, ex-state Sen. Mike Johnston and businessman Noel Ginsberg are among those vying to succeed term-limited Democratic Gov. John Hickenlooper.

Candidates can get at least 30 percent of delegate votes at state assemblies April 14 or petition their way onto the primary ballot.