DAVID MARCUS: In blue Maine, nobody believes Susan Collins will lose until they see it

There are two elements of the Senate race in Maine that truly stand out on the ground. One is that this is a small state, at least in terms of population. The other is that Susan Collins has been a senator here for three decades. The upshot is that almost everyone I've met here has met her. Philip, a lifelong Mainer in his 70s from Bangor, told me in an accent straight out of "Murder, She Wrote": "It would be stupid, in my opinion, not to vote for Susan, she's chairman of the appropriations comm