Sen. Lindsay Graham (R-S.C.) said late Wednesday that he would only vote for Senate Minority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellDemocrats make voting rights push ahead of Senate consideration Hogan won't say if he will file to run for Senate by Feb. 22 deadline Voting rights, Trump's Big Lie, and Republicans' problem with minorities MORE (R-Ky.) to lead the Republican Party in the upper chamber if he proves he can work effectively with former President TrumpDonald TrumpSanders calls out Manchin, Sinema ahead of filibuster showdown Laura Ingraham 'not saying' if she'd support Trump in 2024 The Hill's 12:30 Report: Djokovic may not compete in French Open over vaccine requirement MORE.
"If you want to be a Republican leader in the House or the Senate, you have to have a working relationship with President Donald Trump. He's the most consequential Republican since Ronald Reagan," Graham, a close ally of Trump's, said on Fox News's "Hannity." "It's his nomination if he wants it, and I think he'll get reelected in 2024."
"I like Sen. McConnell," Graham added. "Can Sen. McConnell effectively work with the leader of the Republican Party, Donald Trump? I’m not going to vote for anybody that can’t have a working relationship with President Trump."
"If you can't do that, you will fail," Graham also said.
Earlier this week, McConnell announced that he would run for another term as the top Republican in the Senate.
“I’m going to be running again for leader later this year,” he said on Tuesday.
The Kentucky Republican's announcement came despite pressure from Trump for him to step down, especially after McConnell blamed the former president for inciting the Jan. 6, 2021, attack on the U.S. Capitol.
McConnell's vote for the $1 trillion bipartisan infrastructure bill and a proposal allowing Democrats to raise the debt ceiling with a simple majority vote also sparked criticism from the former president.