Minnesota presidential primary

A Minnesota presidential primary has been held six times: 1916, 1952, 1956, 1992, 2020 and 2024. The state of Minnesota has normally held presidential caucuses instead. On May 22, 2016 Minnesota Governor Mark Dayton signed a bill that reinstated a presidential primary starting in 2020.

1916
The first Minnesota presidential primary was held on Tuesday, March 14, 1916. Along with the Democratic and Republican parties, the Prohibition Party also held a primary. The Progressive Party (Bull Moose) was eligible to hold an election but no candidates filed.

Winners

 * Democratic Party: Woodrow Wilson
 * Prohibition Party: William Sulzer
 * Republican Party: Albert B. Cummins

1952
The second Minnesota presidential primary was held on Tuesday, March 18, 1952.

Winners

 * Democratic Farmer Labor Party: Hubert Humphrey "favorite son candidate"
 * Republican Party: Harold Stassen

1956
The third Minnesota presidential primary was held on Tuesday, March 20, 1956.

Winners

 * Democratic Farmer Labor Party: Estes Kefauver
 * Republican Party: Dwight Eisenhower

1992
The fourth Minnesota presidential primary was held on Tuesday, April 7, 1992. The closed primary was binding for the Independent Republican Party, but for the Democratic Farmer Labor Party it was only a "beauty contest" as the DFL awarded its delegates at March 3 caucuses to Senator Tom Harkin of Iowa.

Winners

 * Democratic Farmer Labor Party: Bill Clinton
 * Independent Republican Party: George H. W. Bush

2020
The fifth Minnesota presidential primary was held on Tuesday, March 3, 2020. However, controversy over the Republican Party of Minnesota excluding challengers to President Trump sparked a legal challenge by James Martin, a voter and Rocky De La Fuente, a presidential candidate jeopardizing the Minnesota Secretary of State from being able to print the ballots for both the Democratic and Republican primary elections. Ultimately, the Minnesota Supreme Court ordered Minnesota's primary to continue as planned, leaving the incumbent president as Republican voters' only option. Two other major parties, the Grassroots-Legalize Cannabis Party and the Legal Marijuana Now Party did not hold a primary. 

Winners

 * Democratic Farmer Labor Party: Joe Biden
 * Republican Party: Donald Trump

2024
The sixth Minnesota presidential primary was held on Tuesday, March 5, 2024. In this primary, the Legal Marijuana Now Party joined alongside Democratic and Republican at the same time, and also on Super Tuesday.

Winners

 * Democratic Farmer Labor Party: Joe Biden
 * Republican Party: Donald Trump
 * Legal Marijuana Now Party: Krystal Gabel