That’s true but they still have primaries in those states that she can win.
Also even if a state has no chance of turning red they still have people with money to donate.
NJ for example gives huge amounts to campaigns for both parties even though they always vote for the democrat.
I'm talking general, not primary. Let's say we have Obama vs. Palin. I would rather she put her money into North Carolina rather than waste the same money on a token appearance in Vermont or Massachusetts...the money her campaign diverts from Vermont and such COULD put her over the top in a key battleground state.