COTABATO CITY -- Inspired by lessons from the November 23, 2009 Maguindanao massacre, rival datus on Monday anointed common candidates for provincial posts at stake during the 2019 elections.The filing of certificates of candidacy for local elective positions will commence this week.Conspicuously present in Monday’s event, first ever since the election-related massacre shook the nation to its core, were the new political figureheads of the Ampatuan clan whose erstwhile leaders are now being prosecuted for the atrocity.Representatives of Maguindanao’s ruling Mangudadatu, Mastura, Midtimbang