President Obama at a stop on his bus tour of Ohio in Port Clinton on July 5. Jim Watson/AFP/Getty Images hide caption

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A campaign worker hangs a sign at a campaign stop for Republican presidential candidate Mitt Romney in Lorain, Ohio, on Thursday. Jae C. Hong/AP hide caption

itoggle caption Jae C. Hong/AP

Opponents of a law limiting collective-bargaining rights cheer in Cleveland as they hear election results sounding the defeat of the measure in the Ohio general election on Tuesday. Amy Sancetta/AP hide caption

itoggle caption Amy Sancetta/AP