The dialogue about Wright’s controversial comments appears to have had at least a short-term impact on public perceptions of Barack Obama. The Illinois Senator is viewed favorably today by just 47% of voters nationwide. That’s down five points since last Thursday (see recent daily results). The number with an unfavorable view of Obama has risen from 44% on Thursday to 50% today. Among White voters, Obama is now viewed favorably by 43% and unfavorably by 54%.
Looked at from a slightly longer perspective, Obama’s overall favorable ratings peaked at 56% on February 21, shortly after he won the Wisconsin Primary. At that point, Clinton began raising questions about Obama as part of the campaign that ultimately enabled her to win the Texas and Ohio Primaries. Since then, Obama’s net favorability ratings have fallen seventeen points (from plus 14 points on February 21 to minus 3 points today).
http://rasmussenreports.com/public_content/politics/election_20082/2008_presidential_election/daily_presidential_tracking_poll