Building off a poll analysis by Mark Blumental, James Joyner defends Rasmussen:
Rasmussen was among the most biased, along with Fox. Both have reputations as Republican-leaning. But — surprise! — the venerable Gallup poll was off even more. In the same direction … [A]nother — not mutually exclusive — explanation exists. It turns out that Rasmussen’s results, which are robocalled, don’t include cell phones. Neither do the Fox numbers. That alone could account for a 3-4 point Republican skew.
The Dish 