Chuck Todd is predicting a net win of delegates for Obama in Texas, possibly a net win large enough to overcome Clinton's net delegate pickup in Ohio. If that's even close to correct, then the bottom line is that it continues to be unclear how Clinton can actually win barring some catastrophic Obama meltdown.

UPDATE: Texas officially gets called for Clinton, raising the question of whether Todd's delegate calculus is right. Everyone on TV says it's onward to Pennsylvania, though it still seems that Clinton is drawing dead.