Key dates in the 2020 election

Nov. 20: Fifth Democratic primary debate, held in Atlanta. Klobuchar has qualified.

Dec. 19: Sixth Democratic primary debate, held in Los Angeles. The thresholds to qualify will be even higher.

January to April 2020: Six more Democratic primary debates will be held, including some in early-voting states.

Jan. 17: Early voting for presidential primary starts in Minnesota.

Feb. 3: Iowa caucuses. The results here will winnow the field.

Feb. 11: Primaries held in New Hampshire.

Feb. 22: Nevada holds Democratic caucuses.

Feb. 29: South Carolina Democratic primary.

March 3: Super Tuesday. Primaries will be held in 14 states, including Minnesota, accounting for about 40% of the total delegate allocation. The two largest delegate counts (California's 416 and Texas' 228) will be up for grabs for Democrats. Minnesota will award 75 delegates.

March 10: Primaries or caucuses in seven states, including Michigan.

March 17: Four states hold primaries, including Florida and Ohio.

March 24: Georgia holds primaries.

April 4: Four states hold primaries or caucuses.

April 7: Wisconsin holds primaries.

April 28: Six states hold primaries, including New York and Pennsylvania. This is the last big delegate day of the race.

May: Six states and Guam hold primaries or caucuses.

June: Four states, D.C. and the U.S. Virgin Islands hold primaries or caucuses.

July 13-16: Democratic National Convention will be held in Milwaukee, placing a spotlight on a key battleground state. The party will pick its nominee.

Aug. 11: Primary for Minnesota's state and national legislative seats, including one U.S. Senate seat.

Aug. 24-27: Republican National Convention will be held in Charlotte, N.C.

Sept. 18: Early voting for the general election begins in Minnesota. You can vote by mail or in person.

Sept. 29: First presidential debate, at the University of Notre Dame in Indiana.

Oct. 15: Second presidential debate, at the University of Michigan in Ann Arbor.

Oct. 22: Final presidential debate, at Belmont University in Nashville.

Nov. 3: Election Day.