In it, but not of it. TPM DC
Things get a bit more interesting, though, when you look at the internals.
Among Democrats, for the public option wins out wins out an astonishing 83-8 margin of support. And among independents, it's an almost as impressive 73-15. Only among Republicans does opposition outpace support, 33-55.
So Lieberman's advocating against the wishes of almost all Democrats and independents and about a third of all Republicans. Maybe that helps explains why, if the 2012 elections were held this year, he'd be in terrible shape.