Who's The Most Disliked Politician?
Nate Silver compares favorables:
The average score for Ms. Pelosi was 30 percent favorable and 55 percent unfavorable, giving her a net favorability rating of negative-25. This was the worst score of any politician in the study by some margin. Others with substantially net negative scores included Dick Cheney (-17), Harry Reid (-16), Sarah Palin (-14), Newt Gingrich (-10) and George W. Bush (-9; his numbers have improved some), but Ms. Pelosi’s scores were somewhat worse over all.