Herman Cain, emerging from a debate last night where recent sexual harassment allegations against him were brushed aside, was greeted at a diner here this morning by a throng of supporters who crowded his bus, lined the sidewalk, and pushed to shake his hand and snap his picture. But the Georgia businessman also continued to show his willingness to wade into controversy. As he was exiting the Big Sky Diner – and supporters chanted, “Yes we Cain! Yes we Cain” – he stopped. “How do you beat Obama?” he asked. “Beat him with a Cain.”