Article Photos: Political ads blitz viewers, risk voter turnoff 2/2

  This image provided by Romney For President, Inc. shows a still frame made from a video ad entitled "12 Million Jobs." One analysis estimates the campaigns and independent groups will have spent about $1.1 billion on television advertising this year, with $750 million already allocated in states likely to determine the outcome of the presidential contest. Romney primarily is running a spot in which he promises to boost the economy through manufacturing, energy and cracking down on China. (AP Photo/Romney for President, Inc.)