Donald Trump’s campaign declined to comment Thursday on whether North Carolina Lt. Gov. Mark Robinson, whom the former president once described as “Martin Luther King on steroids,” should drop out of the battleground state’s race for governor.

The party is prohibited from selecting a replacement who already ran in the same race in this year’s primary. That means State Treasurer Dale Folwell and attorney Bill Graham would not be allowed to replace Robinson.

The North Carolina gubernatorial candidate reportedly praised Hitler on an adult message board more than a decade ago.