Where the Colorado governor and Denver mayor stand on ballot measures

State of play: The most controversial issue is Proposition 131 to abandon party primaries and use ranked choice voting to select general election winners.

• U.S. Sen. John Hickenlooper, Gov. Jared Polis and Denver Mayor Mike Johnston support the ballot measure.

Yes, but: U.S. Sen. Michael Bennet and state Senate President Steve Fenberg are mounting a vocal opposition.

What they're saying: Polis is backing the initiative, saying "it will encourage participation and improve our democracy."

• But Bennet recently told supporters it further empowers wealthy donors and "adds significant complexity and uncertainty to our elections."

Between the lines: Amendment 80 asks voters whether putting a student's right to school choice in the constitution is divisive. Johnston, a prominent charter school supporter, says he's voting no, while the governor is neutral because he's "not sure exactly what a constitutional right would mean legally."

The other side: Polis and Johnston both support Amendment J to repeal the definition of marriage and Amendment 79 to enshrine the right to an abortion in the constitution.

Zoom in: Polis is supporting all the ballot measures at the state level except Amendment 80 and Propositions 127 and 128, where he is neutral and undecided.

• In Denver, Johnston says he will vote in favor of all the ballot measures except two — 308 banning fur sales and 309 banning slaughterhouses. He didn't explain his positions but both are considered threats to the local economy.