Donald Trump may need to enthuse evangelical voters

Donald Trump’s success in the race for the White House may well ride on the support of Republican evangelicals made wary as the front-runner reveals a more liberal side to his social views.

A case in point is today’s nominating contest in Indiana, a conservative Midwestern US state that has voted Republican in nine of the last 10 presidential elections.

A New York businessman who has never held public office, Trump has had some success with evangelicals in states such as South Carolina.