The Minnesota legislature re-convenes February 11, 2020. Some legislators will introduce a bill to ease the requirements for getting on a presidential primary ballot, and hope to pass the bill in time to affect the 2020 Republican presidential primary. Current Minnesota law gives a party that is holding a presidential primary complete discretion on who can get on its presidential primary ballot. The Republican Party of Minnesota is only putting President Trump on its ballot.
The bill would enable any candidate to get on with a filing fee, and that would enable other Republican candidates to run. See this story.