By Karen Lema and Neil Jerome Morales MANILA, (Reuters) -Ferdinand Marcos Jr was headed for a stunning victory in the Philippines’ presidential election on Monday with double the votes of his nearest rival, putting the son of the notorious late dictator on the cusp of a historic political fightback. An unofficial tally by the election commission showed Marcos, 64, was close to passing the required 27.5 million votes to secure a majority in a presidential election for the first time since the end of his father’s 1965-1986 rule. The count makes almost certain a previously unthinkable return to p…