Political Geography

Pennsylvania Democratic Primary

Barack Obama and Hillary Rodham Clinton are battling it out in three distinct regions of the Keystone State: the southeast corner, anchored by Philadelphia and its East Coast identity; the southwest corner, anchored by Pittsburgh and its Rust Belt roots; and the so-called "T", the rural portion of the state that sits between and above the two major cities.

CREDITS: Reporting by Paul Kane; Map by Gene Thorp; Graphic by Laura Stanton, The Washington Post - April 22, 2008