A man observes a livestock auction at the Cambria County Fair, September 8, 2016, in Ebensburg, Pennsylvania. The White House race could be decided in the Rust Belt -- a vast, decaying former industrial powerhouse in the US Midwest and Northeast where Hillary Clinton and Donald Trump are battling for the support of working class white voters. / AFP PHOTO / DOMINICK REUTERDOMINICK REUTER/AFP/Getty Images