PRINCETON, NJ—A sizable proportion of Democrats would vote for John McCain next November if he is matched against the candidate they do not support for the Democratic nomination. This is particularly true for Hillary Clinton supporters, more than a quarter of whom currently say they would vote for McCain if Barack Obama is the Democratic nominee.
I would guess this is because Hillary is viewed as more moderate than Obama, so McCain is picking up the moderate Democrat vote. Shades of McGovern or Mondale?