Why would Obama's leads in CO and VA get smaller while his national lead got larger though (according to Rasmussen)?
Because Rasmussen is not always right and people need to stop acting like their polls are the be-all-end-all.
Yup
everybody lays an egg now and then - just the way it is
Never, ever forget.. One poll is, well, one poll
Rasmussen has shown he
can get it right, that does not mean he has gotten it right again.
Rasmussen has proven himself to be a good pollster and belongs in the data set, along with the other top tier pollsters.
What I do is look at the list of polls for a state, throw out the obvious idiots based upon their historical outcomes, and average the rest. - Works almost all of the time