Obama: 47%
McCain: 40%
Obama's advantage over McCain in a prospective general election contest stems from his strong support among voters under age 65, among women and independents. Among African Americans, Obama leads McCain 80% to 3% with 18% undecided or favoring someone else, but McCain leads among white voters by a 47% to 41% margin, with 12% undecided or favoring someone else.
McCain: 50%
Clinton: 38%
In a prospective McCain/Clinton match-up, McCain wins easily, 50% to 38%. His lead is based upon a 59% to 32% advantage among men, compared to Clinton's narrow 44% to 41% edge among women. While McCain trails Obama among every age group under 65, he leads Clinton in all age groups - his biggest advantage coming among those ages 30-49, where he enjoys a 53% to 35% edge. Among African Americans, Clinton wins just 58% support against McCain, who wins 18% backing. Among whites, McCain leads Clinton by a 57% to 32% edge.
...
Obama: 52%
Clinton: 38%
McCain: 47%
Huckabee: 32%
The Reuters/Zogby telephone survey was conducted Feb. 13-16, 2008, and included 1,105 likely voters nationwide, and carries a margin of error of +/- 3.0 percentage points. The subsample of Democratic likely voters included 494 respondents and carries a margin of error of +/- 4.5 percentage points. The subsample of Republican likely voters included 434 respondents and carries a margin of error of +/- 4.8 percentage points.
http://zogby.com/news/ReadNews.dbm?ID=1451