Mr. Biden has been zipping around the country to places like Columbia, S.C., and hard-hit Rust Belt cities like Akron, Ohio, and Pittsburgh, while Mr. Obama has been confining himself largely to friendlier settings like college campuses and big-dollar fund-raisers.
In the world of stereotypes and clichés, "hard-hit Rust Belt" is redundant. The political geography predates the story. We still wonder how the message will play in Peoria. The above New York Times article reads like stock footage.
How much do geographic mesofacts influence political campaign strategies? I would guess that they often trump polling numbers. Thus, Biden instead of Obama visits Pittsburgh.