US election still too close to call: Clinton campaign chair America's historic presidential election showdown between Donald Trump and Hillary Clinton is still too close to call, with several states still up in the air, the Democrat's campaign chair John Podesta said. Trump appeared to be on the cusp of clinching the 270 electoral votes needed to win the White House, but Clinton still held onto a slim path to victory that hinged on her winning contests balanced on a knife's edge in Pennsylvania, Michigan and Wisconsin. SOUNDBITE