A general election was held in the U.S. state of Minnesota on November 3, 2020. All seats in the Minnesota Senate and Minnesota House of Representatives were up for election as well as several judicial seats, Minnesota's 10 presidential electors, a United States Senate seat, Minnesota's eight seats in the United States House of Representatives, and several positions for local offices. A primary election to nominate major party candidates and several judicial and local primary elections were held on August 11, 2020.

Elections for state and federal offices were held via first-past-the-post voting. The candidate or bloc of presidential electors that wins the most votes will be elected. Nominations for parties with major party status—the DFL, Grassroots–Legalize Cannabis, Legal Marijuana Now, and Republican parties—were determined by an open primary election. The candidate that won the most votes in each party became their party's nominee for the general election. If only a single candidate sought the nomination for each party, a primary election for that office was not held.

Judicial and several local elections will be held via a nonpartisan blanket primary. Each voter had up to as many votes as there are positions to be filled. Voters could vote for a candidate not more than once. The top number of candidates that won the most votes in the primary election that was twice the number of positions to be filled advanced to the general election. If not more than twice the number of candidates to be elected sought election, a primary election was not held. Most cities, school districts, and all townships and hospital districts did not hold a primary election—instead, all candidates appeared at the general election. The top number of candidates that win the most votes in the general election that is equal to the number of positions to be filled will be elected. Judicial and local elections are nonpartisan.

The candidate filing period was from May 19 to June 2, 2020. The filing period for cities, townships, school districts, and hospital districts that did not hold a primary election was from July 28 to August 11, 2020.

Minnesota's 10 electors in the Electoral College were up for election, who would subsequently cast votes for president and vice president on December 14, 2020.

Minnesota had voted for the Democratic nominee in every presidential election since 1976, the longest streak of any U.S. state as of the 2016 election. The Democratic nominee in 2016, Hillary Clinton, won Minnesota by less than two percentage points over Republican nominee Donald Trump.

Minnesota's class 2 United States Senate seat was up for election. Incumbent DFL Senator Tina Smith was originally appointed in 2018 by Governor Mark Dayton to replace Senator Al Franken after he resigned. Smith won a special election and is seeking election to her first full term in the Senate. The DFL had held Minnesota's class 2 U.S. Senate seat since 2009 when Al Franken defeated Republican incumbent Norm Coleman after a protracted recount following the 2008 election. Lieutenant Governor Tina Smith was appointed in January 2018 by Governor Mark Dayton to replace Franken after he resigned following sexual harassment allegations. Smith won her first election in the 2018 special election.

Former U.S. Representative Jason Lewis was the Republican nominee. Other candidates included Legal Marijuana Now Party candidate Kevin O'Connor and Grassroots–Legalize Cannabis Party candidate Oliver Steinberg. Candidates who lost the primary election for the Republican nomination included John Berman, Bob Carney, Cynthia Gail, and James Reibestein. Candidates who lost the primary election for the DFL nomination included Steve Carlson, Ahmad Hassan, Paula Overby, and Christopher Seymore.