Sen. David Perdue said in a recent op-ed that Utah Republican Sen. Mitt Romney made the same mistake that cost him the 2012 election when he criticized President Trump in an opinion piece of his own.

Perdue (R-Ga.) wrote in the piece that Romney's "attempted character assassination of the president" divided the Republican Party.

Romney wrote that Trump "has not risen to the mantle of the office," and that he has seemingly lacked the leadership needed to resolve a divided nation.

Perdue wrote on Friday that "Romney has taken a stance that smacks of jealousy and resentment. It does nothing but serve the radical liberal left and further divides conservatives."

Sunday on "Fox & Friends," Republican National Committee spokeswoman Kayleigh McEnany said that Republicans should focus on the divisions of their political counterparts instead of each other.

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"We as a party are united around [Trump]," she said.

Republican strategist Lauren Claffey added that Romney thought his op-ed would be an effective way to express his opinion without being hounded by the media.

McEnany also said that Trump supporters came out in droves against Romney's remarks.

"We cannot be divided right now at a time of divided government," she said. "It's really important that we stick together."

Claffey said she doesn't think that more Republicans will follow suit and openly criticize Trump.

"I do think that there's going to be a real conversation about how President Trump wins again," she said. "Whether that results in a primary candidate, I don't think so. It may happen, we'll wait to see."

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