FILE - In this Oct. 9, 2008, file photo, Democratic presidential candidate Sen. Barack Obama, D-Ill., middle, is introduced by Sen. Sherrod Brown, D-Ohio., left, and Ohio Gov. Ted Strickland, right, during a rally at Shawnee State University, in Portsmouth, Ohio. As Democrats bring their primary debate to Ohio Tuesday, the question is whether the Republican foothold in Appalachia and places like industrial Youngstown is irreversible, whether Ohio is a political battleground no more. (AP Photo/David Kohl, File)
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