Campaigning for the May 9 Philippine presidential election kicked off Tuesday with candidates competing to succeed President Rodrigo Duterte, who has yet to officially endorse any hopeful up to this point.Ferdinand Marcos Jr., the 64-year-old son and namesake of the late dictator, is leading in opinion polls in a strong alliance with Sara Duterte-Carpio, daughter of Duterte, as a candidate for vice president, a separately elected post.Vice President and opposition leader Leni Robredo is struggling to catch up with Marcos. Robredo, a human rights lawyer and a vocal critic of Duterte's war on…READ FULL ARTICLE