Obama leads in polls following Romney gaffes

Mitt Romney's latest gaffe has given President Barack Obama's post-convention lead in the polls a little more strength.

Obama is leading in several surveys released days after a video showing Romney talk to donors surfaced.

The GOP contender went on the defensive after he told the group during the May event that he couldn't win over the 47% of Americans who don't pay income tax.

Obama 48% Romney 43%

-Reuters/Ipsos poll

Obama 51% Romney 43%

-Pew Research Center

Obama 50% Romney 45%

-NBC/Wall Street

-Journal poll