Republican primary

Tuesday's contests offer 352 delegates among six states. Michigan is the biggest prize, and it could be another pivot point in this Democratic primary.

Super Tuesday is the biggest day of the Democratic primary campaign. Fourteen states will hold nominating contests to pick who they think should square off this fall against President Trump.

Walsh supported Trump during his 2016 campaign but of late has offered bitter critique of the president, calling him a liar, bully and unfit for office. Walsh has also attacked Trump from the right.