Dr. Ben Carson's campaign spent days playing defense after a CNBC moderator challenged the candidate on his ties to a supplement company during the last Republican presidential debate.
But after a very bad week that saw various news outlets poke holes in his powerful personal narrative and call him out for easily disprovable claims about the Egyptian pyramids and America's Founding Fathers, this week's debate on Fox Business Network may prove to be an even tougher contest for the retired neurosurgeon.
Carson's camp was quite busy last week explaining everything from discrepancies in the candidate's biography to the rationale behind an ad aimed at black voters that featured a Carson-themed rap song.
Here's a look at the challenges he faces as he goes into Tuesday's debate:
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