Donald Trump's national political director Jim Murphy takes a 'step back' from campaign

Jim Murphy, the national political director of Donald Trump, has stepped back from thecampaign, according to the media reports."I have not resigned but for personal reasons have had totake a step back from the campaign," Murphy said.

Murphy, who joined the Trump Campaign in June, did notspecify any reason for this.He is a close ally of Paul Manafort, Trump's formercampaign chairman, having worked together on Bob Dole's 1996presidential campaign, Politico said.Manafort had resigned from the campaign in August.