President Donald Trump recently spoke to the South Carolina Republican Party's Silver Elephant Gala through a phone that Sen. Lindsey Graham held up to a microphone.Trump, who endorsed Graham for re-election earlier this year, continued expressing his support for the senator while speaking on the phone.Trump said the senator has his "full endorsement," calling him a "great guy," saying that Graham has always been there for him when he needed him and he "won't forget it."CONSERVATIVE BACKLASH ERUPTS AFTER TRUMP'S GRAHAM ENDORSEMENT: I AM NOT WITH TRUMP AT ALL WITH THIS ONE"Thank you for your surprise call, Mr. President!" Graham said in a post on X that also featured footage of Trump's remarks about him."With your support, Ill keep delivering the America First agenda to the great people of South Carolina. Im glad to have been part of the most awesome six months in modern history led by President @realDonaldTrump."Graham, who has served in the Senate since 2003, is facing Republican primary challengers.TRUMP ENDORSES SEN. LINDSEY GRAHAM FOR RE-ELECTION: HE WILL NOT LET YOU DOWNPaul Dans, the former director of the 2025 Presidential Transition Project at the Heritage Foundation and who is one of Graham's challengers, attended the event where Trump spoke by phone."Lindsey Grahams terrifiedhis Senate seats at risk against me, his toughest challenger yet. After 32 years of broken term-limit promises, hes done. Clinging to President Trump wont save him from SCs America First Patriots who see his grift. #LindseyPanic #PrezTrumpPlsHelpMe," Dans wrote in a post on X.LINDSEY GRAHAM DRAWS DEMOCRATIC SENATE CHALLENGER WHO PREVIOUSLY LOST CONGRESSIONAL RACEGraham will be up for re-election in 2026.