As the US election approaches, presidential candidate Donald Trump has been doubling down on the religious language - selling bibles, preaching retribution and styling himself as a persecuted saviour. Trump enjoys the support of the overwhelming majority of white evangelical voters, but will that be enough to return him to the White House?     Guests:  D Stephen Long, theologian, Cary M. Maguire University Professor of Ethics at Southern Methodist University  Sarah McCammon, NPR Political Correspondent, author of Ex-vangelicals: Loving, Living and Leaving the White Evangelical Church  David Smith, Associate Professor in American Politics and Foreign Policy at the United States Studies Centre, and the School of Social and Political Sciences, University of Sydney