1) "The state Obama just won doesn't count because X", where X = some probably spurious slicing of polls to demonstrate that while he may have won, it was just a fluke. This was insulting last week, now it's silly.
2) "Obama is killing the chances for universal health care." What, you mean that the difference between their two policies is going to make the difference between heaven and hell? Because from where I sit -- a country that already has universal health care -- it looks like the difference between two laughably inadequate half-measures. It looks like what you'd expect from a country that was, in living memory, burned by someone promising too much in a failed drive for universal health care. Who was that again?
3) "Obama is now the front-runner, Clinton is the insurgent/underdog." No, really, you don't want to do this. Sen. Clinton ran the first year of this campaign on the presumption that she was not just electable, but the only one worth considering. And that's still an advantage she holds over a considerable number of voters. If you give away the air of inevitability, you've given away the only thing your campaign ever had. Might as well hand Sen. Obama the nomination on a plate.
LATER: Fixed #3 to make more sense. Thanks, Nonynony.