In terms of the numbers in the race for the Democratic nomination for President, Barack Obama inched closer to victory again on Sunday, as he picked up another superdelegate, this time from the state of Minnesota.

It's been almost two weeks - or more - since Hillary Clinton got a superdelegate, the last being Rep. John Murtha (D-PA.)

In the meantime, Obama has been getting one here, one there, one here, one there.  No landslide or anything, but everyone he gets is one that Hillary needs.

The latest 'poll of polls' (combining the major ones) from Pennsylvania yields a 6-8 point lead for Hillary Clinton, which is down from where it was a few weeks ago.

Watch the numbers, especially by the end of the week.  By then, we should know if the "bitter" remarks about small town voters by Obama were anything more than a diversion or something that will really impact the campaign.

The biggest thing that could shake up this race this week is a debate on Wednesday in Philadelphia. 

Last week, I would have said that it will probably be another debate like the two just before the March 4th primaries in Ohio and Texas....in other words, a "nice" debate where the two candidates don't really get in the face of the other.

Now I'm not so sure.

The last time we had a real 'in your face' battle, it was in Myrtle Beach, not long before the South Carolina Primary.  That came as Hillary and Bill Clinton were getting knocked around for statements on racial issues that really hurt her in the Palmetto State.

While you may be reading this because you want to get away from stories about Obama's "bitter" comments, those are going to drive the news leading up to this debate.

There has long been a fear in Democratic circles that one of Obama's weak spots is that he is basically a rookie when it comes to campaigning.  You can have all the best handlers and strategists, but sometimes you drive the campaign bus.

I don't see Wednesday as 'make or break' by any means, but to use a football metaphor, Team Clinton just got a turnover in Obama's territory.  Obama leads by 12 points in the 4th quarter, but if Clinton scores, suddenly momentum is on her side.  One defensive stand and she could suddenly have a chance.

You've seen those games before.  Most of the time, the team leading still wins the game.

But not always.