Thank God for Markos, wasting his money on these random polls.
What's he trying to do anyway?! Markos is a Democrat, right? Is he attempted to prove vulnerability in Democrats that nobody serious is considering challenging? For safe Democrats, shouldn't he wait until after their opponents line up?
He's just giving potential challengers a free set of polling while giving the incumbents nothing.
I mean, I don't mind. It's actually quite nice but he's not like an objective news organization. Kos is a highly partisan, pragmatic [although ideological] Democrat. This poll doesn't prove vulnerability, but it proves he's being a crappy cheerleader