On the Verge of a Stunner in Pennsylvania?  —  Hold on to your hats.  I've gotten the usual word of the exit poll results from one of my usual reliable sources.  He notes that Obama traditionally over-performs in the earliest exit polls, and that he expects the numbers to change as the night wears on - perhaps a reversal.

LIVE BLOGGING PENNSYLVANIA EXIT POLLS AND VOTE RETURNS  —  I will be live-blogging here starting very soon on what the exit polls will have to tell us about the exit polls.  More details to follow, but please feel free to use this as an open-thread on what is appearing on the net and elsewhere on the exit polls.

Don't trust the unweighted exit polls!  —  [UPDATE, 8:12 PM: Welcome, new readers!  The scenario I predicted in this post is now happening.  Some leaked exit poll numbers show Obama winning, others Clinton leading by a slight margin.  Regardless, it's all meaningless.

Heavy Turnout in Pa.  —  Pennsylvania is on its way to the record turnout that election officials have been predicting for weeks, according to poll workers from across the state.  —  Election officials were reporting extremely heavy voter activity in many of the state's 67 counties throughout the morning …

Exit Polls: Change And Polarization  —  From the folks at CBS News, a look at the early exit polls:  —  The exit polls show a smaller percentage of late deciders — 23% — than in previous states.  The economy mattered most to 54% of voters.  (TV news reports say that Clinton won these folks.)

Clinton, Obama Down To The Wire In Pa.  —  Exit Polls: 23 Percent Decided Within Last Week; Polls Close At 8 P.M. ET As 6-Week Battle Comes To A Close  —  (CBS/AP) Hillary Rodham Clinton and Barack Obama collided Tuesday in the Pennsylvania primary, the last of the big-state contests …

EXITS: BEEN THERE, DONE THAT  —  As you may have noticed Drudge has up what he says are 5 PM exit poll numbers showing Clinton 52%, Obama 48%.  I suspect they are ‘accurate’ as far as early, un-weighted exits can be.  But let me point out that my recollection is that pretty much all the early …

Popular Vote  —  Suppose Hillary Clinton wins a huge victory tonight and manages to pull ahead of Obama in the popular vote total.  I still don't see how that could possibly secure her the nomination as long as the national polling looks anything like this.

Clinton Holds Off Obama in Pennsylvania  —  Senator Hillary Rodham Clinton won the Pennsylvania Democratic primary on Tuesday night, defeating Senator Barack Obama in a crucial victory that is likely to keep her presidential campaign alive for the next round of contests.