Sources close to John Edwards tell CNN he will not endorse either of his former presidential rivals before Super Tuesday. "That's just not something he's going to do," said one source.
The former North Carolina senator's endorsement would be a coveted prize. His exit from the race leaves unions, editorial boards, elected officials and voters who had backed his run suddenly up for grabs. Sens. Hillary Clinton and Barack Obama are aggressively courting all of those groups ahead of next week's crucial Super Tuesday contests in 22 states.