Minnesota's gubernatorial candidates clashed over the state's fraud scandals in their second debate of the week, with Republican House Speaker Lisa Demuth pledging to fire all state commissioners on her first day in office and Democratic Sen. Amy Klobuchar defending her response.The scandals have rocked the North Star State, raising questions about how large-scale abuse of state programs went undetected and putting government oversight at the center of the governor's race."Fraud unchecked here in the state of Minnesota has gone far too long, and it has finally come to the surface," Demuth said...