Bernie Sanders’ challengers are looking to slow down his momentum, but polling after last night’s South Carolina debate shows he remains in a strong position. Anthony Salvanto, CBS News’ director of elections and surveys; CBSN political reporter Caitlin Huey-Burns; Zach Montellaro, a campaign reporter for Politico; and Eugene Scott, a political reporter for the Washington Post, spoke to CBSN’s “Red & Blue” about the state of the race heading into the South Carolina primary and Super Tuesday. Source