Why Super Tuesday could leave Democrats even more unsettled as Biden tries to stop Sanders' momentum

On the eve of Super Tuesday, a confident Joe Biden glanced back to his landslide victory in South Carolina over the weekend and looked ahead to what he thinks will be a very good night. The former vice president told supporters in Houston that "we won in South Carolina, and we’ll win in Texas tomorrow.”

Texas is the second biggest prize on Super Tuesday – when a third of all Democratic presidential nomination delegates are up for grabs. Fourteen states from coast to coast hold primaries on a single day.

Biden – who nearly pulled even with front-runner Sen. Bernie Sanders of Vermont in the delegate hunt thanks to a larger than expected victory in South Carolina – is aiming to prevent Sanders from capturing a large lead in the crucial battle for convention delegates. Biden’s goal is to firmly cement his status as the moderate alternative to Sanders – the populist lawmaker who describes himself as a democratic socialist.

Just a week ago, that seemed like a daunting task. Sanders was poised to carry his big victories in the early states into Super Tuesday and become virtually uncatchable in the delegate game. But as Biden’s South Carolina win prompted rivals to drop out and close ranks behind him, the former vice president is now a viable threat to Sanders. And Super Tuesday, in turn, may not settle things as much as previously thought.