(PHILLY) — It’s one thing for a Democratic presidential candidate to dominate a Democratic city like Philadelphia, but check out this head-spinning figure: In 59 voting divisions in the city, Mitt Romney received not one vote. Zero. Zilch.

These are the kind of numbers that send Republicans into paroxysms of voter-fraud angst, but such results may not be so startling after all.

“We have always had these dense urban corridors that are extremely Democratic,” said Jonathan Rodden, a political science professor at Stanford University. “It’s kind of an urban fact, and you are looking at the extreme end of it in Philadelphia.”

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