Johnson was once New Mexico governor.
The Libertarian Party candidate for president is speaking at Macalester College.
Gary Johnson, a former two-term New Mexico governor who left the Republican Party at the end of 2011, is holding an afternoon event at the St. Paul school as part of a nationwide college tour.
Before leaving the GOP, Johnson had sought the party's presidential nomination but was only allowed to participate in some candidate debates. He holds some standard Republican views like support for lower taxes and spending cuts, but diverges from the party in support for legalizing marijuana and drastically decreasing the U.S. military presence overseas.
Johnson's campaign says his name will appear on the presidential ballot in all 50 states, though that is subject to ongoing legal challenges in several states.