Mexico ruling party works out leadership dispute on 3rd try

MEXICO CITY (AP) — The Morena party of Mexican President Andrés Manuel López Obrador has finally chosen a leader after two failed, acrimonious tries. A poll of party members published Friday gave a comfortable margin of victory to congressional leader Mario Delgado, a centrist seen as more obedient to the president.  The results of an earlier poll that showed a tie and had been hotly disputed by Porfirio Muñoz Ledo, a political warhorse more critical of Lóp