ETNA, Ohio -- Call it the crosstown showdown.President Obama began Friday at the Franklin County fairgrounds in Hilliard, a suburb northwest of Columbus. Four hours later, Mitt Romney was here in Etna, a suburb east of the capital. Obama charged that his opponent is misleading Ohioans about the auto industry and their livelihoods. Romney answered with a blistering assault on the incumbent’s first term, imploring voters to compare their records. Each candidate urged voters to trust him more than the other guy, with Obama needling Romney for changing positions and Romney insisting...

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