Dr. Ben Carson will launch his presidential campaign on May 4 in his hometown of Detroit, NBC News confirms.
Carson, a former pediatric neurosurgeon who has never held elected office but has won acclaim from conservatives for his tough criticisms of the Obama administration, formed a presidential exploratory committee in early March.
The Detroit News first reported the date of the announcement.
A recent NBC News/Wall Street Journal poll found that 41 percent of GOP primary voters said they could see themselves supporting Carson, while 18 percent said they could not imagine backing his campaign.
Mark Murray and Carrie Dann