I sense the beginnings of a backlash against grumpy old man McCain for his unfair negative attacks...
...
While Obama has dominated McCain as the candidate citizens say they have heard the most about in the news, roughly equal numbers say that they are aware of commercials on behalf of each candidate. About six-in-ten have seen commercials for both candidates. Most of those who are aware of Obama's commercials say they are mostly positive messages about the candidate (38%), while fewer (13%) characterize them as negative messages about McCain. The balance of opinion about McCain's commercials is the opposite - a plurality (31%) sees them as negative messages about his opponent, with fewer (19%) describing them as positive ads.
There is surprising partisan agreement about the campaign commercials of both candidates. On balance, both Republicans and Democrats think Obama's commercials have been mostly positive. And pluralities of both Republicans and Democrats say McCain's ads are mostly negative. Nonetheless Democrats are more likely than others to say Obama's commercials are positive, and Republicans are less likely to characterize McCain's ads as negative.
When asked about specific commercials, those tested for each candidate registered about similar recall levels - 41% of Pew's respondents said they have seen McCain's commercial that compares Barack Obama to Paris Hilton and Britney Spears. Almost the same number - (43%) report seeing Barack Obama's commercial where he talks about his background growing up in Kansas.
http://people-press.org/report/441/obama-fatigue)