U.S. senator from New Jersey

State: New Jersey

Age: 50

Claims to fame: The former Newark mayor declared "I am Spartacus" when he violated Senate rules by disclosing confidential documents during Brett Kavanaugh's Supreme Court confirmation battle. He is the only high-profile black male candidate in the race.

Biggest weaknesses: He has been criticized as being too friendly with pharmaceutical firms and being a school-choice ally of now Education Secretary Betsy DeVos, declaring in 2002 that vouchers would promote "educational justice in America."

Miami moment: Stunned look when Beto O'Rourke answered in Spanish. He said he was the only debater who "had seven people shot in their neighborhood just last week.”

Candidate visits to Michigan: Candidate visits to Michigan: July 24 for the NAACP national convention in Detroit; May 2 in Detroit