Ohio polling

“Surveys of the Buckeye State have been all over the board in recent weeks as the election draws near. While most show President Obama with the lead, the size of it depends on whether the pollster was using human beings or robots to do the interviewing.

TPM compared the two methods and found that polls conducted by a live interviewer, the method widely considered to be the gold standard, have shown the President with larger leads than polls conducted by automated calls, which are prohibited from contacting people through cell phones. Since early September, live polls have shown Obama with an average lead of 4.5 percentage points in Ohio while his average lead in robo-polls has been less than 2.”

http://2012.talkingpointsmemo.com/2012/10/ohio-polls-live-automated.php?ref=fpa