At least this year, it's increasingly clear Rasmussen Reports polls are outliers when compared to their peers.
For instance, while other polls show the spread between President Obama's approval/disapproval rating ranging from +4 to +17 points, Rasmussen has it at -5.
On the 2010 generic ballot, other polls show Democrats leading from +2 to +12 points, while Rasmussen has Republicans +5.
Andrew Sullivan notices the same trend and concludes "it's perfectly clear that Rasmussen is polling a different country than other polling outfits."