I guess we should look at the base map, before counting in Vice Presidential Candidates:
McCain vs Obama
McCain 89 ECVs
Obama 85 ECVs
McCain vs Clinton:
McCain 89 ECVs
Clinton 89 ECVs
And thus we determine that Clinton really is more electable than Obama... even moreso if we factor in the whole "island cut off from everywhere else" syndrome of RI, NH, ME. She could probably also get whole "I lived in Arkansas while my husband was Governor" effect, but McCain has spent so long in the Senate, he could probably get the homeland effect in DC.