Quinnipiac University/CBS/New York Times
8/15/12-8/21/12; 1,241 likely voters, 2.8% margin of error
Mode: Live telephone interviews
49% Obama (D), 46% Romney (R) (chart)
50% Nelson (D), 41% Mack (R) (chart)
Obama Job Approval
47% approve, 48% disapprove (chart)
CORRECTION: This post initially reversed the percentages supporting Nelson and Mack.