President Barack Obama's campaign and its Democratic allies raised $181 million in September for his re-election effort, the largest total that either side has announced yet in the 2012 campaign. Obama's campaign said on Saturday that more than 1.8 million people donated to it last month. Of that, 567,000 were new donors. A vast majority of the donations - 98 percent - were $250 or less. The average contribution was $53. Read more.