Businessman Herman Cain and former Massachusetts governor Mitt Romney are running nearly even atop the field of 2012 GOP presidential hopefuls, a new Washington Post-ABC News poll shows, with most Republicans dismissing the harassment allegations that over the past week have roiled Cain’s campaign. Seven in 10 Republicans say reports that Cain made unwanted advances toward two employees when he was head of the National Restaurant Association in the 1990s--allegations which have been stiffly rebutted by Cain’s campaign--do not matter when it comes to picking a candidate.