Trump supporter Ben Carson calls for 'civility'

Getty Images

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.

Carson's call comes after a series of attacks by Trump on rival Ted CruzTed CruzPoll: Majority of GOP voters wish they chose another presidential nominee Trump attacking immigration issue openly and honestly Election 2016: A choice between Goldfinger and Darth Vader MORE's wife.

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.

More in Presidential races

Carson: 'Not wise' to engage in name-calling

Read more »