Trump supporter Ben Carson calls for 'civility'

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Ben Carson, who has endorsed Donald TrumpDonald TrumpFox Business tops CNBC in GOP convention ratings Trump capitalizing on fears over crime Cruz’s gamble for the GOP 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 CruzCruz’s gamble for the GOP Report: Trump to create super-PACs to attack Cruz, Kasich Clinton: Ted Cruz was right 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.

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