In November, many working-class people dramatically registered their disgust with the Democratic Party, either by voting for Donald Trump or sitting the election out. Last week, as a result, Trump began his second term as president.

The strategist who managed Bernie Sanders’s presidential race says the party needs vision and conviction “to restore a deeply damaged Democratic brand.”

The race features two state party chairs — Ken Martin of Minnesota and Ben Wikler of Wisconsin — who have increasingly drawn contrasts with each other.