In this Oct. 29, 2015 file photo, Republican presidential candidate Ben Carson speaks in Lakewood, Colo. For some Republican presidential candidates, the party’s first three primary debates have been pivotal proving grounds that have strengthened their campaigns or shaken their supporters. The famously mild-mannered Carson has largely avoided making headlines in the widely watched televised events, often willing to cede the spotlight to more verbose rivals. Yet the retired neurosurgeon’s standing with voters in preference polls has only gotten better. (AP Photo/David Zalubowski, File)

Carson staffers quit, question his readiness for White House

Stepped down with less than five weeks before voters in Iowa begin the nominating process with the state’s Feb. 1 caucuses.

This undated file photo provided by the Las Vegas Metropolitan Police Department shows Lakeisha N. Holloway, who police said intentionally smashed into crowds of pedestrians on the Las Vegas Strip on Sunday, Dec. 20, 2015, killing one person and injuring dozens. Tests showed that Holloway had more than the Nevada legal limit of pot and its metabolic byproducts in her blood when she was arrested shortly after the Dec. 20 crash, Clark County District Attorney Steve Wolfson said Wednesday, Dec. 30, 2015.  (Las Vegas Metropolitan Police Department via AP, File)

Prosecutor: Driver held in Vegas crash had pot in system

“The amount of marijuana and marijuana metabolite does not appear to be enough to affect her mental state at the time of the crime,” DiGiaco…