Butpre vote surveys predicted an obama victory.
Not true! I for one had been following national and state-by state polling here very closely. Both Rasmusmussen and Gallup (who had the best track records for accuracy) had Romney ahead, albeit by a slim margin, a day or two before Election Day in their final poll results.
The Romney camp's internal pollsters apparently thought the same thing because Romney campaign insiders were reported as "shellshocked" on election night.
The bottom line: regardless of a pollster's reputation and technique, you can't poll fraud and cheating!