Time to decide. Or, as we simply stated on the front page of the print edition, it’s D-Day.

That D stands for Democrats, specifically Pennsylvania Democrats.

They will go to the polls today in record numbers to vote for either Sen. Hillary Clinton or Sen. Barack Obama as the party’s nominee for president.

Pennsylvania has spent the last six weeks in the national spotlight, an unlikely position for the Keystone State, which has become accustomed to not having much of a say in this presidential nominating process.

Not this year. Things broke perfectly for Pennsylvania to become Ground Zero for politics after Clinton rallied for wins in Ohio and Texas.

Nothing else has been normal about this election, so I guess I shouldn’t have been surprised to hear Obama say something yesterday I’m not sure I’ve heard come from a major candidate.

He said he expects Clinton to win. But he also thinks he will manage to keep it close.

I don’t know whether he’s running for president or playing horseshoes.

But he has a point. He doesn’t have to win. In fact, no one expects him to win. All he has to do is keep it close, not get blown out.

Most polls have Clinton’s once huge lead down to single digits. That’s what the kind of money Obama has poured into this race will do for you.

So here’s the call: I think Clinton will win, but not by as much as she needs to silence her critics. I say the margin of victory will be about five points. Obama will win big in Philly. I think he’ll also win Delaware County. Clinton will pull her numbers from the ‘T’ in the middle of the state as well as her family’s home turf in Scranton.

But her slim win will only ratchet up the heat on her within the party to get out and allow Democrats to unite behind Obama. Those people don’t know the Clintons very well. They aren’t going anywhere. Neither is the party.

I say it goes to the convention and the superdelegates. And in the process opens the door to a win by the presumptive Republican nominee, Sen. John McCain, in November.