@cicerone imposter,
This doesn't really answer your question about Indy's, Tak, but I found it interesting. Gallup, which I picked because it is fresh (a few days ago), free and breaks the totals down into subsets, polled something like 1000 Adults asking them to indicate whether they Approve-Disapprove of Obama's job performance.
a) Overall (Approve 49%) (Disapprove 43%)
b) Democrat (83% - 17%)
c) Independent (46% - 54%)
d) Republican (16% - 84%)
e) liberal (76% - 24%)
f) moderate (58% - 42%)
g) conservative (29% - 71%)
h) liberal Democrat (88% - 12%)
i) moderate Democrat (83% - 17%)
j) conservative Democrat (73% - 27%)
k) pure independent (34% - 66%)
l) liberal/moderate Republican (28% - 72%)
m) conservative Republican (12% - 88%)
I am always suspicious about polls that ask people to describe themselves.