Obamacare is also likely to weigh on people's minds when they vote this November: 52 percent said the law would be a major factor in their decision, and 20 percent said it would be a minor factor.
The Bloomberg poll didn't ask how it would affect people's votes. An NBC News/Wall Street Journal poll found that the law was currently a wash between the two parties for the 2014 elections.
Bloomberg News surveyed 1,001 U.S. adults from March 7 to 10. The poll's margin of error is 3.1 percentage points.