Joe Biden the front-runner again after Super Tuesday

Former Vice President Joe Biden racked up big wins in delegate-rich states like Texas, North Carolina and Virginia, according to NBC News projections. Sen. Bernie Sanders won Colorado, Utah and his home state of Vermont. He was favored to win in California, although NBC has yet to make a call in that state. So far, Biden's delegate total was at 453, ahead of Sanders' 373, NBC News said.