As Bernie Sanders has surged in polls and racked up victories in early states, there has been growing discomfort among many Democrats about the prospect of running this fall with a socialist at the top of the ticket. On Super Tuesday, the battle between Sanders and the Democratic establishment will be coming to a head.

After a dominant win in Nevada to go with his victory in New Hampshire and his arguable win in Iowa, Sanders seemed to be in a prime position to capture the Democratic nomination just a week ago. He had a strong lead both nationally and in Super Tuesday states, lots of money, and a vast organization.