Actually, I informed her that a large number of demos would not vote for him, but could not bring themselves to vote for any republican, so they would not vote in the presidential election at all.
Also, there were a measurable number that already have McCain stickers on their vehicles, such as my life long democrat mother.
Some of the harder-core Hillary supporters in the region I've run into told me they would write in Hillary come November than vote for either Obama or McCain.
Fascinating.