Ben Carson 2016: Unlikely US frontrunner in uncommon era

Humble but controversial, politically inexperienced yet deeply popular, retired neurosurgeon Ben Carson is a campaign contradiction, albeit one who just surpassed Donald Trump as frontrunner in the 2016 Republican presidential battle. Recent major national polls have Carson edging ahead of his fellow political outsider, a noteworthy trend in a primary campaign season in which voters are venting their frustrations with Washington and anger with establishment politicians who they see as failing to