I made this point below, but I'll make it again -- the snap polls completely short circuit the ability of the right-wing noise machine to ramp up the "our guy won because the Democrat sighed" b.s. It's hard for the right-wing pundits on the air to make the case that McCain won when the numbers are so starkly in opposition.
This was particularly in display during the vice-presidential debate, when the enraptured Right wanted to proclaim her the Second Coming, while a secondary effort attempted to create outrage over a supposed Biden "sigh". Yet all of that hit a brick wall after the snap polls emerged.
There's no way to spin that stuff. When the American people say "Obama won" or "Biden won", it sort of settles the debate conclusively.