Argentina ruling party candidate Scioli concedes defeat

BUENOS AIRES (Reuters) - Argentina's ruling party candidate Daniel Scioli conceded defeat in Sunday's presidential election after calling his center-right challenger Mauricio Macri to congratulate him. "The Argentine people ... have elected a new president, Mauricio Macri, who I have just congratulated by telephone," a weary looking Scioli told supporters. (Reporting by Maximiliano Rizzi; Writing by Richard Lough; Editing by Mary Milliken)