Also, the more polls which can be skewed to look like an Obama win will give room for the moonbats to claim another "stolen" election if McCain does win, which would weaken a McCain administration for the next four or eight years. Intrade has been portrayed as the "perfect" poll because people are actually putting money at risk, but if a few are trying to skew it for political benefit then it isn't so perfect anymore.
I don't know how much it would take to skew the results.
It's probably in the thousands.
That's pocket change to Soros.