I recently posted on why political polls are error-prone. But I only really addressed one common problem with political polls – the tendency to “correct” for demographics. That it because it seems likely to be the most vexing problem this time around, given the media’s excitement about the possibility of our first black president.
Oh – and the same Briggs Blog entry also contains this pertinent observation:
Ever notice that at the Democrat rallies you hear “Obama! Obama! Obama!”, while at the Republican ones you hear “USA! USA! USA!”?