Gallery: Bernie Sanders and Alexandria Ocasio-Cortez in Coralville, Iowa

Bernie+Sanders+reacts+to+someone+in+the+crowd+as+they+criticize+Micheal+Bloomberg+entering+the+Democratic+race%2C+on%2C+Saturday%2C+Nov.+9.+Photo+by+Emily+Jacobson

Bernie Sanders reacts to someone in the crowd as they criticize Micheal Bloomberg entering the Democratic race, on, Saturday, Nov. 9. Photo by Emily Jacobson

Kevin Donovan