Results are based on telephone interviews with 1,025 national adults, aged 18 and older, conducted Feb. 1-3, 2010. For results based on the total sample of national adults, one can say with 95% confidence that the maximum margin of error is ±4 percentage points.
For results based on the sample of 942 registered voters, the maximum margin of error is ±4 percentage points.
For results based on the sample of 490 Republicans and Republican-leaning independents, the maximum margin of error is ±5 percentage points.
