Ben Carson, who has endorsed Donald TrumpDonald TrumpSenate Dems' campaign arm pauses spending in key Ohio Senate race: report Trump’s popularity with African-American voters polling at zero Report: Trump campaign CEO was accused of sexual harassment MORE, is calling for "civility" in the GOP presidential race.
"It's important that we have civility during times of disagreement," Carson, who ended his own bid at the beginning of the month, tweeted Thursday afternoon.
It's important that we have civility during times of disagreement.— Dr. Ben Carson (@RealBenCarson) March 24, 2016
On Tuesday night, Trump threatened to "spill the beans" about Heidi Cruz. The attack came as a response to an ad from an anti-Trump super-PAC that featured Trump's wife, Melania, posing nude.
Late Wednesday night, Trump followed up by sharing a tweet with an image comparing his wife to Cruz's wife and stating "A picture is worth a thousand words."
Cruz angrily shot back at Trump on Thursday, telling him to leave his wife out of the campaign.
"Donald, you're a sniveling coward. Leave Heidi the hell alone," he said.