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Lindsey Graham enters South Carolina’s Republican primary with President Donald Trump’s endorsement as the sort of senator the MAGA era was supposed to retire from the D.C. swamplands.
Graham is a four-term incumbent seeking a fifth term, a Senate institutionalist, and an Iran hawk whose foreign-policy instincts cut against the “America First” ideology. There’s little appearing to stand in the way of another victory, even if he is forced into his first-ever runoff.
It’s a markedly different story from John Cornyn’s, another Grahamesque figure in the Senate. Cornyn not only failed to secure Trump’s endorsement, but also the backing of Texas Republicans to keep his seat in the Lone Star State.
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Graham’s main surviving Republican challenger, Mark Lynch, calls himself an “America First” candidate. Yet it is Lynch, not Graham, that Trump has branded as a “lunatic” and a “disaster” for the party.
This inversion reveals the truth here. Graham did not discover perfect ideological purity under MAGA’s America First umbrella. He discovered the Trump indulgence.
Texas Shows the Purge Model
There’s a simple question in South Carolina: Where’s Graham’s Ken Paxton?
Texas demonstrated the model of a MAGA purge when Paxton defeated four-term Cornyn in the May 26 Republican Senate runoff after an eleventh-hour Trump endorsement.
Cornyn was no liberal Republican; he was a reliably conservative vote in the Senate for years. But his recent departures from MAGA’s worldview include voting for Ukraine aid and the bipartisan gun safety bill passed after the 2022 Uvalde school shooting.
More damagingly in the eyes of Trump, Cornyn was seen as insufficiently loyal during the most difficult times, particularly between the two terms, when the president was vying for the candidacy again amid a wave of legal troubles.
Paxton, MAGA’s clear favorite, came to the fight fully loaded.
He had statewide office, three statewide wins, a record of legal combat against Democratic administrations, and a history of scandal that many supporters folded into a persecution narrative after his 2023 acquittal in the Texas Senate.
Moreover, Paxton outflanked Cornyn on issues Trump saw as vital, including supporting the SAVE America Act to reform federal voting rules—and nuking the filibuster rule if necessary.
Trump’s endorsement probably helped Paxton’s margin, but may not have decided the race. Polling had Paxton pulling away before Trump intervened, and Cornyn’s runoff turnout collapsed by more than 400,000 votes.
Texas is what MAGA discipline looks like when the movement has a vessel for insurgency against an unsatisfactory incumbent.
South Carolina Shows the Exception
Graham carries many of Cornyn’s liabilities without drawing Cornyn’s fate.
He is seeking a fifth Senate term having served in Congress since 1995. His old immigration deals once earned him the epithet “Grahamnesty” on the right, a position that would not be tolerable in the MAGA-era Republican Party.
And he remains closely identified with the muscular foreign policy that many America First conservatives say they distrust after decades of foreign adventurism, such as Afghanistan and Iraq.
Awkwardly, Graham was also critical of Trump over January 6 and the 2020 election. Yet, despite all this, Trump endorsed Graham early.
Graham has become a political confidant of Trump’s. He’s a regular golfing partner, and sometimes travels with the president. He has been particularly close to Trump’s ear on the issues of intervention in Iran and Cuba.
Fortunately for Graham, his challengers did not consolidate into a Paxton and complicate Trump’s endorsement.
Paul Dans, a chief architect of Project 2025, dropped out before the primary and endorsed Lynch; Trump responded by saying Tucker Carlson’s endorsement of Dans had been the “KISS OF DEATH”, then said Lynch would be a “DISASTER” if elected.
Money deepened the contrast. Graham had spent more than $29 million by May 20 and entered the final stretch with about $4.2 million on hand, more than double the rest of the Republican field combined.
The polling tells two stories at once: RealClearPolling’s table shows several recent surveys with Graham above or near the 50 percent threshold, while The Citadel Poll found him at 46 percent to Lynch’s 36, with 18 percent unsure.
MAGA anger can bruise an incumbent, but it still needs a standard-bearer to deliver an upset.
Usefulness Outranks Purity
The standard explanation for all this is that Graham bent the knee. True, he did. But that thesis is too thin.
Graham’s real protection is usefulness. He gives Trump Senate fluency, loyal television advocacy, foreign-policy reinforcement and a veteran Republican validator who knows how Washington power works.
Trump delivered Graham’s long-standing wish for direct confrontation with Tehran, a conflict with which the two men are in regular contact. Graham is one of Trump’s biggest Iran war boosters on the airwaves. It is hard to think of a more pro-war senator.
Iran makes clear the MAGA loophole through which Graham slips.
This is exactly where Graham should be most vulnerable to the America First case against him. But while the MAGA revolt over Iran is real, it sits mostly at the top of the movement.
Prominent voices like Tucker Carlson, Steve Bannon and Marjorie Taylor Greene, all aligned ideologically with MAGA and America First, have denounced the war in scathing terms.
Trump and Carlson had feuded over the war after Carlson called it “absolutely disgusting and evil”.
Most Republican voters in available polling did not appear to follow the anti-war MAGA elites into opposition to the strikes.
Spring polling put Republican support for the strikes near 80 percent and backing among self-identified MAGA voters close to 90, even as support had softened while the war dragged on.
Trump started the war and claimed it as an America First endeavor, the MAGA base largely resolved its doubts in his favor, and the discontent that remained stayed loud rather than electorally decisive.
The hawkishness that might ordinarily disqualify Graham became useful once Trump adopted the conflict as his own. The older Republican interventionism entered MAGA through the president’s side door.
Graham's Defense Is Also the Loophole
Graham’s supporters can argue that voters are rewarding his effectiveness, loyalty and accumulated power in the upper chamber.
He has defended Trump, helped him in Senate fights, retained state support, and used his decades of Washington experience in ways a less seasoned insurgent might not be able to pull off.
Moreover, Graham not only has Trump’s endorsement, but South Carolina’s leading Republicans Tim Scott and Henry McMaster are set to chair his campaign too, and he has a major financial advantage over his challengers
All of these factors make South Carolina very different from Texas.
But that defense of Graham strengthens the case that he has found MAGA’s only loophole for Republicans.
In Trump’s GOP, effectiveness is measured against service to Trump’s project, Trump’s fights, and Trump’s standing.
Cornyn’s conservatism could not save him because Paxton offered a more coherent claim to loyalty, and a promise that it would endure for Trump in future.
But Graham’s hawkishness hasn’t sunk him—because Trump has made room for it, to suit him.
The MAGA movement has substantive policy content and a genuine ideology that drives it forward. Its voters are not mere empty vessels waiting for instructions from above.
But the South Carolina-Texas contrast shows something narrower and more important. When doctrine collides with Trump’s authorization, his authorization usually wins.
The label “America First” still mobilizes resentment, money, and media attention. But it is very hard for a candidate to authenticate their claim to that label once Trump calls it a counterfeit badge on them.
Even if discontent over Iran drags Graham into a runoff, the rule his race exposes will hold. In this MAGA movement, purity matters until the president grants an exception.
MAGA did not spare Lindsey Graham because it forgot what he was. It spared him because Trump remembered what he was useful for.
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