"Most people don't know much about any of these people, and plus there is always an advantage for the incumbent," she said.
The field of possible Republicans challengers to Obama has not generated much enthusiasm so far, with several waiting to announce their candidacy.
Obama, who made history in 2008 by becoming the first African-American to be elected president, leads possible Republican candidates by double digits.
He polls above 50 percent when compared to his closest rivals, former Arkansas Governor Mike Huckabee and former Massachusetts Governor Mitt Romney, according to the poll.
Obama leads Huckabee by 51 percent to 39 percent, and Romney by 51 percent to 38 percent.
Obama way ahead of Republicans for 2012 election - Reuters
The Meck Report / Blog - May 12, 2011 - 12:20p