Which swing state will pollsters screw up most badly?

Colorado is my #1 candidate. Polls were atrocious in 2008 throughout the southwest, with Obama's support being grossly misrepressented in final polls. It has been argued that this area with a high concentration of hispanics requires bilingual interviewers asking poll questions, as many spanish-speaking people with poor english understanding do not bother to participate.

I read Colorado's hispanic population is one of the fastest-growing in America.

Pennsylvania is another state where I think Obama's 5%-7% poll lead is way too low, and he will win by double digits or 9% at the least.

In Colorado in '08, Obama won by 9%, with the poll average being 5.5%

http://www.realclearpolitics.com/epolls/2008/president/co/colorado_mccain_vs_obama-546.html

Keep an eye on Virginia as well, as many Hispanics have been moving there from the North.