Below is a map of Pennsylvania, indicating the winner in each Keystone State county in yesterday’s Democratic presidential primary.

Sen. Hillary Clinton won 55 percent of the vote overall, capturing approximately 215,000 more votes than her rival, Sen. Barack Obama.

A strong victory for Clinton, but still a reasonably contested race.

This map makes it look like a landslide, however - and plays into the Clinton campaign’s central argument against Barack Obama’s electability.

Aside from greater Philadelphia and Harrisburg, Barack Obama lost virtually every county in Pennsylvania - most of them by substantial margins…

Of course, the counties Obama did win are among Pennsylvania’s most populous, and his inability to defeat Hillary Clinton in some counties doesn’t automatically translate to inevitable losses to John McCain there.

The candidates are a little different, don’t you think?

Still, no Obama supporter can like the sight of that sea of light blue, indicating one 60-40 or even 65-35 rout after another. There’s a clear disconnect with rural, working-class voters in the Northeast / Rust Belt - one that the controversy over his remarks (however misguided the criticism might be) didn’t help.

What will it take for Obama to bridge the gap out there in “cling” country? Or is America simply not ready for a politician this atypical?