The poll, conducted January 21-23 among 1,012 adults, comes with a margin of error of plus or minus 3 percent. Subsamples of 479 Republicans and Republican-leaning independents and 441 Democrats or Democratic-leaning independents have a higher margin of error, around 4.5 percent each.
The survey also tested the Republican presidential primary field, a group so disparate and wide open that more than half of Republican primary voters have never heard of some of the leading candidates. More than 59 percent of voters say they have never heard of, or have no opinion of, Mississippi Gov. Haley Barbour, former Sen. Rick Santorum, former Minnesota Gov. Tim Pawlenty, Indiana Gov. Mitch Daniels, Rep. Mike Pence and Sen. John Thune.
Former Arkansas Gov. Mike Huckabee leads the pack in name recognition with a 72 percent favorable rating. He's closely trailed by former Alaska Gov. Sarah Palin, who is seen favorably by 70 percent of Republicans, and former Massachusetts Gov. Mitt Romney, who has a 64 percent approval rating.