Zero
I'm surprised that these aren't defined as Bush's lies, instead of flip-flops...however, if you are in politics for more than a year, you are going to vote in seemingly contradictory ways, depending on the specific circumstances. That's a a simple fact, Dem or Repub, and it means very little without showing very specifc context. I wouldn't be in the least surprised to find that of some of Kerry and Bush's "flip-flops" are reactions to a change in the situation, and not a sign of some pseudo-psychological character flaw.