Former U.S. representative from Maryland

State: Maryland

Age: 56

Claims to fame: He began his campaign nearly two years ago, emphasizing his working-class roots and rural policies that might attract Trump voters. He was booed at the California Democratic Convention for criticizing Medicare for All as politically dumb.

Biggest weaknesses: He has low name identification and attacks left-wing proposals that are increasingly popular in the party.

Miami moment: He questionably claimed a family member got separated in the immigration process and said, "We need real solutions, not impossible promises."

Candidate visits to Michigan: Jan. 10 in Detroit