County clerks in DuPage and Kankakee Counties could start running elections, a move Gov. Bruce Rauner hopes will be the first of a number of governmental entity consolidations.The merger will save DuPage taxpayers $300,000 a year, Villa Park Democrat Sen. Thomas Cullerton said in a statement. But Rauner said following all the advice of the task force that suggested the move could bring even greater tax savings.“The estimate was we’d save Illinois taxpayers $3.5 billion per year,” Rauner said when signing …