Well, the polls are closed in Pennsylvnania and the The New York Times says that Obama and Clinton are “locked in a tight race” and that the result is “too close to call.” Others appear to be on the same page: CNN says it’s a “competitive race.” The Philadelphia Inquirer, on its home page, perhaps tellingly, doesn’t offer a take.
So what do the exit polls say? Well, you never know what you’re really dealing with here, especially given your analyst’s near perfect state of ignorance of what other information is out there.
That said, the exit numbers show a close win for Clinton. If the poll numbers displayed on CNN reflect something close to reality, about 78 percent of those voting in the Pennsylvania Democratic primary are 40 or older; Clinton is winning handily with that group. Some 38 percent of the Democratic poll respondents are 60 and older, and Clinton wins that group 59-41. Obama wins the 39 and under voters decisively, too. Based on the numbers in the age category only, Clinton comes out with something like 52 percent of the vote in the end.
For the vote by race, the CNN exit poll appears to have statistically significant results only for white voters. Among white voters, Clinton got a significantly larger share in every age group except the youngest (18-29), where she has a 50-50 split with Obama. My guess from this category and from others (education, religion, gun ownership, region) where Clinton seems to enjoy large advantages–and considering also that the exit polls show 58 percent of the Democratic voters in Pennsylvania were women–I think Clinton will wind up with something like 55 or 56 percent of the vote. Not as close, probably, as the major news outlets are saying (or hoping, perhaps).