Hillary Clinton appears to have gotten a boost in Iowa now that the Biden factor has receded. Caucus states are notoriously difficult to poll (
as noted here) but two separate polls now suggest Clinton is hovering around a 40-point lead over Bernie Sanders—her biggest lead to date.
Here' the Monmouth University poll (6/27-29 results):
Hillary Clinton: 65% (63)
Bernie Sanders: 24% (20)
Martin O'Malley: 5% (5)
Undecided: 4% (8)
And the Loras College poll (8/24-27 results):
Hillary Clinton: 62% (48)
Bernie Sanders: 24% (23)
Martin O'Malley: 3% (4)
Undecided: 10% (6)
Update by kos: Added trendlines. For the Monmouth poll, the trendlines are so old that they are practically useless, having missed the big Sanders gains. So how much stock can we put in these polls, with their gaudy outlier-looking numbers? I'm certainly skeptical and wish that Selzer would come back and repoll post-Benghazi Inquisition testimony. Her last last one (for the Des Moines Register) had Clinton up 48-41, but just a week out they already feel obsolete. If you really want to know what is going on in Iowa, Selzer is the gold standard.