Philadelphia, UNITED STATES
Campaign posters for Tony Williams, a Philadelphia mayoral candidate, are seen outside of the Summit...
Campaign posters for Tony Williams, a Philadelphia mayoral candidate, are seen outside of the Summit Presbyterian Church in Philadelphia, Pennsylvania on May 19, 2015. Campaign finance watchdog groups fear heavy spending by ultra-rich Americans will warp the election - already expected to be the most money-soaked in history - and prop up candidates who don't represent the will of the majority.REUTERS/Mark Makela