Not Getting The Point

Santorum notices the trend, but doesn't get the significance:

Then this jibe about the geography of Romney's appeal:

“If you look at where my Republican opponent has won, it’s always in and around the cities. It almost looks like a Republican versus a Democrat,” Santorum said, referring to some states that he did not explicitly name. “He’s winning the areas the Democrats win and I win the areas Republicans win.” Santorum paused for a moment. “Does that tell you something maybe?”

It tells me that if the Republicans are foolish enough to make Santorum the nominee, they'll get destroyed.  He thinks this proves the unelectability of Romney, while I think it proves the unelectability of Santorum.  Who wants to bet on this disagreement?