→ Bias in Political Polls

Katrina Trinko at National Review:

But regardless of partisan breakdown, Republicans should be wary of taking any polls as completely accurate.

“Part of the reason the Democrats won in 2008 was that when it looked as if McCain was going to lose, some Republicans stayed home,” argues McLaughlin. “So if President Obama is in a dead-even race with Mitt Romney in so many swing states, if the Democrats can convince enough Republicans they’re going to lose, it could take a one-point loss for the Democrats to a one-point win.”

That is the main thing: do not let the media convince you that the election has already been won before voting even starts.