Fifteen candidates are on the Democratic ballot, even though some already have dropped out of the race. The GOP ballot lists only President Donald Trump, though write-in votes are allowed. It's Minnesota's first presidential primary since 1992 after years of using precinct caucuses to kick off the process of selecting national convention delegates.

KSTP 2020 election guide

Supporters of Minnesota Sen. Amy Klobuchar's presidential campaign had early voting events scheduled across the state Friday. And Klobuchar was due to appear at a rally Friday night at the First Avenue nightclub in downtown Minneapolis with Gov. Tim Walz, Sen. Tina Smith and U.S. Rep. Angie Craig.

Meanwhile, U.S. Rep. Ilhan Omar was holding get-out-the-vote rallies in Minneapolis for Sen. Bernie Sanders.

Voters must request either a Democratic or Republican ballot, and their names will be shared with the state's major parties.

