Why won't some candidates concede?

Good question, according to the Wall Street Journal: "Hillary Clinton's chances of winning the Democratic nomination are increasingly remote, with even a blow-out victory in Tuesday's West Virginia primary unlikely to make much difference. Still, the New York senator has vowed to continue campaigning until the nominating process ends June 3 in Montana, South Dakota and Puerto Rico. Political analysts say office seekers who hang on, even long after the race seems futile, may be hoping to position themselves for a later run or to reshape the party more to their liking. They may be bargaining for the vice presidency, feel pressure from supporters, or believe there is an off-chance they will get lucky. But what is clear from 1976, and two more-recent races, is that the party took a drubbing when challengers refused to concede and instead pursued the nomination into the convention. "The lesson is that you can make matters much worse for your party and yourself if you push this too far," says American Enterprise Institute scholar Norm Ornstein." "Political analysts say all those forces could be behind Sen. Clinton's apparent reluctance to leave the race. A solid finish could position her as vice president or as the party's 2012 or 2016 nominee, Virginia's Mr. Sabato says. Her strength among women and working-class whites makes it hard to drop out, especially since Sen. Clinton is expected to win primaries in Kentucky and West Virginia in the next two weeks."

Rico says if it's pushing things too far you want, look for a Clinton...