On ever level, Barack Obama is now the clear frontrunner. Some of his supporters have begun to suggest it's time for Hillary Clinton to drop out of the race. Her campaign has made clear that their chances rest on Ohio, Texas, and Pennsylvania, and that they expect more losses, before those states vote. It's not impossible that they will pull this off, but neither is it likely. Even so, I find it curious that so many of Obama's supporters are now so confident of victory that they think Clinton shouldn't even bother putting her strategy to the test.