Daily Kos Elections Morning Digest: Despite big Obama leads, Pennsylvania Senate polling tightens

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' FL-, OH-, PA-Sen: Quinnipiac is out with its newest wave of swing state polls on behalf of CBS/NYT; the news is uniformly good, both at the presidential level (Obama is ahead an astonishing 53-44 in Florida, as well as 53-43 in Ohio and 54-42 in Pennsylvania) and at the Senate level, although there's one surprise.

FL: Bill Nelson (D-inc): 53 (50), Connie Mack (R): 39 (41)

OH: Sherrod Brown (D-inc): 50 (48), Josh Mandel (R) 40 (41)

PA: Bob Casey (D): 49 (55), Tom Smith: (R) 43 (37)

So who would have thought a year ago (or even a couple weeks ago) that Bill Nelson and Sherrod Brown would be flattening their opponents, despite millions of outside super PAC money being spent on their behalfs, and that Bob Casey would be running a closer race than either of them, despite his seemingly untouchable status in the Keystone State and his Some Dude-ish opponent? (The PA trendline is from late July, while the others are from August.)

There is a definite trend here, though, with several other polls (albeit R-friendly ones, like Susquehanna and Rasmussen) finding a high-single-digits race lately. In fact, there was one other poll of the race Wednesday also showing tightening, though to the low double-digits, from credible local pollsters Franklin & Marshall (PDF). F&M puts it at 48-38 among LVs (46-34 among RVs), which is narrowed from 43-28 in August. (F&M's newest also has a 52-43 presidential topline, as they finally seem to be pushing leaners.) Don't start fretting too much, though, as the overall aggregate trendlines don't see Casey fading as much as Smith gaining, probably thanks to a) ramping up his self-funded TV spending and b) increasing his name rec among Republicans.

And in the Florida Senate race, Connie Mack is trying to do a bit of pushback on the "he's doomed" meme... but the best he can do, in terms of coughing up an internal, is one showing that he's losing "only" 48-42. That wouldn't fill me with much confidence if I were one of his donors, but he's gotta do something, I suppose.