Ben Carson ‘not worried’ by Trump, as poll shows him closing on The Donald

As the Republican presidential candidates gathered for their second televised debate of the campaign on Wednesday night, latest polling showed that one candidate at least does not fear Donald Trump, the pugnacious frontrunner.

Ben Carson, the retired neurosurgeon, says he is “not the slightest bit” worried about sharing the stage with Mr Trump, and a New York Times/CBS News poll putting him on 23 per cent to Mr Trump’s 27 per cent suggested his confidence is not misplaced.