The man from Indiana who's "a heartbeat away" from the US presidency. Mark Coles tells the story of how a Catholic boy with Democratic Party leanings became a born-again evangelical and a hero of the Republican right. With President Donald Trump's recent bout with Covid-19, there has been more and more attention paid to the man next in line for the Oval Office. But there are doubts about whether a majority of the American public agree with the vice-president's strictly socially conservative views.