Facing a heated primary against Texas Attorney General Ken Paxton, Sen. John Cornyn (R-TX) accused his right-wing challenger on Thursday of associating with antisemitic and anti-Israel voices within the MAGA movement. 

Cornyn told Jewish Insider in a wide-ranging interview that Texas Republican voters should view Paxton’s associations with figures such as former Trump advisor Steve Bannon as “alarming” — while urging Republicans to call out antisemitic and anti-Israel voices within the party, along the lines of his outspoken Texas GOP colleague Sen. Ted Cruz (R-TX).

“There’s this interesting, and troubling, tendency of some folks who claim the MAGA mantle to associate with antisemites like Nick Fuentes, Candace Owens and Steve Bannon. I know Ken Paxton regularly goes on Bannon’s ‘War Room’ podcast, and it’s something that should be alarming to Texas voters. People like that I don’t think are what I would call conservatives,” Cornyn said. 

“Once they “get their foot in the door, they have a way of corrupting the whole party and the whole movement,” he continued. “I just think allowing somebody like Ken Paxton inside the tent will end up being the destruction of the Republican Party.”

Paxton has been a guest on Bannon’s “War Room” podcast on numerous occasions in recent years, even as Bannon has made a number of controversial comments, most notably labeling popular Jewish conservative podcast host Ben Shapiro as a “cancer” on the party after he spoke out against Tucker Carlson and Owens’ antisemitism at a Turning Point USA conference last year.

Bannon has also ramped up attacks on Israel, calling the Jewish state a “protectorate” of the United States — while speaking out against President Donald Trump’s decision last year to attack Iran’s nuclear facilities. 

A spokesperson for Paxton defended the Texas attorney general’s record on Israel and fighting antisemitism in a statement to JI. 

“AG Paxton has been a fierce friend of Israel,” the spokesperson said. “After spending $70 million and still being double digits behind in the polls, Sen. Cornyn has nothing else left but to throw random attacks at the wall and see if they stick. AG Paxton has a STRONG and unquestionable record standing against antisemitism.”

Cornyn is facing a tough reelection battle against Paxton and Rep. Wesley Hunt (R-TX), both of whom are running to his right in next month’s Republican primary.

The senator, a fixture in Texas politics for nearly four decades who served at the top levels of Senate leadership, argued that his primary contest would help determine what it means to be an electable Republican at a time when the party’s principles and values are being debated internally. 

“A lot of it [the GOP primary election] is going to boil down to a question of character. I think character still matters and the attorney general doesn’t believe it matters at all,” Cornyn said. “I just can’t in good conscience turn over this job representing 32 million people and a state that I love and a party that I helped build over my career, I can’t turn it over to a corrupt and unprincipled individual like the attorney general.”

Cornyn warned that the GOP is at risk of being overrun by extremists if prominent conservatives continue to align themselves with fringe figures who espouse antisemitic views, drawing a comparison to his assessment of the current ideological trajectory of the Democratic Party. 

“It starts out with the old saying: the enemy of my enemy is my friend. A lot of these folks were opposed to a lot of the worst excesses of the Democratic Party and the leftists. They began to corrode that movement with things like antisemitism and graft and greed. I think that’s how credibility of the opposition was eroded, by failing to call out people like that,” Cornyn said. 

“To maintain the integrity of conservatives, that’s why it’s so important to call out and to cut out some of these cancers that I think ultimately would result in the failure of the conservative movement,” he continued. “Because people could point to the corruption that was allowed to develop and thus undermine the credibility and integrity of the whole movement.”

Cornyn praised Cruz for “being one of the first to stand up and call out some of the fringe characters,” and criticized Republicans who associate themselves with far-right figures. 

“I’ve tried to do my part, initially through an editorial in the Dallas Morning News. I know this is a cancer, because antisemitism is just another way of dehumanizing people, and then using that behavior to justify in some people’s minds acts of violence,” the GOP senator said. “Obviously, the history of the Jewish people, dating back to the Holocaust, has been one of opponents trying to dehumanize them and make them seem to be something less than equal in terms of their dignity and their right to exist.”

Asked whether Trump would back him before the March primary, Cornyn told JI that he did not expect an endorsement, adding that he was dealing with “a lot of misinformation and lies.”

“I’ve been supportive of the president and his policies. Unfortunately, you always have to contend with a lot of misinformation and lies in modern elections,” Cornyn explained. “He [Trump] said he considers all three of us [GOP candidates] to be friends. If your base is divided among three people, choosing one out of those three people and disappointing the supporters of the other two, I can understand [that being] not something he would want to necessarily embrace unless he felt like it’s worth the cost.”

Cornyn argued that he would be the strongest general election candidate between himself, Paxton and Hunt, whereas Paxton would “ultimately provide the Democrats the best opportunity they’ve had since 1994 to turn Texas blue.”

“President Trump desperately wants to maintain the majority in the House, and we’ve got five new congressional seats in Texas,” he said. “If I’m the nominee, I will provide some help to those downballot races since I’ll be at the top of the ballot. I won by 10 [points] in 2020. If Paxton is the nominee, he’ll either lose or win by the skin of his teeth.”

Asked about Texas state Rep. James Talarico and Rep. Jasmine Crockett (D-TX), the Democrats in the race, Cornyn suggested he would enjoy running against either in a general election.

“They should be running for Senate in California because they are totally out of step with where I think Texans are,” he said. 

Cornyn added that he would not underestimate Crockett.

“I wouldn’t count out Jasmine. Jasmine is smart, but I think she’s not running as good a campaign as Talarico,” Cornyn said. “Talarico is raising a lot of money, and he definitely has a better organization than Jasmine does.”

Sen. John Cornyn (R-TX), facing a serious primary challenge from his right, released a new campaign ad on Thursday calling “radical Islam” a “bloodthirsty ideology” that has influenced recent terror attacks targeting Jews.

“It fueled the unspeakable crimes on Oct. 7,” Cornyn says in the 30-second ad, called “Evil Face,” before citing the mass shooting last month during a Hanukkah gathering in Australia that was allegedly motivated by the terrorist group ISIS. “It showed its evil face again at Bondi Beach.”

Speaking directly to the camera, Cornyn touted his recent efforts to revoke the tax-exempt status of the Council on American-Islamic Relations, a nonprofit advocacy group whose executive director has drawn scrutiny for celebrating the Hamas attacks of Oct. 7, 2023.

“Let me be clear: No organization that supports terrorists should receive taxpayer benefits,” Cornyn concludes in the ad. “And Sharia law has no place in American courts or communities.”

The seven-figure ad buy is now running statewide on broadcast, cable and digital platforms, according to the campaign.

The ad comes after Texas Gov. Greg Abbott, a Republican, issued a declaration last November designating CAIR as a foreign terrorist group as well as a “successor” to the Muslim Brotherhood effectively posing as a front for Hamas, prohibiting the organization from purchasing land in the state. 

The declaration allows the state’s attorney general, Ken Paxton, the right-wing Republican mounting a competitive challenge to Cornyn in the March primary, to sue to shut down the group and impose fines on its leaders.

CAIR, which called the proclamation defamatory and unconstitutional, has filed suit to challenge the designation, which Paxton has vowed to vigorously defend.

Following Abbott’s announcement, Cornyn, for his part, introduced legislation in the Senate in December that seeks to strip CAIR of its nonprofit status over its alleged support for terrorism. In a statement about the bill, Cornyn, who is seeking reelection to a fifth term, described the organization as “a radical group of terrorist sympathizers with a long history of undermining American values,” while endorsing the governor’s designation.

Both Cornyn and Paxton have otherwise boasted of their records supporting Israel and fighting the rise of antisemitism.

The decision by Texas Attorney General Ken Paxton to challenge Sen. John Cornyn (R-TX) in the state’s GOP primary is not only setting up a blockbuster contest between two Texas heavyweights, but is testing what it means to be a conservative Republican at a time when the party’s principles and values are rapidly shifting.

The contest pits Cornyn, a fixture in Texas politics for nearly four decades who served at the top levels of Senate leadership, against Paxton, the state’s scandal-plagued attorney general and a vocal supporter of President Donald Trump, in what is expected to be one of the highest-profile – and costly – intra-party fights this cycle. 

“It’s going to be really nasty and really expensive,” Matt Mackowiak, a Republican political consultant and the former chairman of the Travis County GOP, told Jewish Insider of the race. “Paxton is going to have to prosecute an intense, negative case that resonates with primary voters, but Cornyn is going to also prosecute a negative case with primary voters too.”

Cornyn has the support of many leading Republicans in Washington, including Senate Majority Leader John Thune (R-SD) and National Republican Senatorial Committee chairman Sen. Tim Scott (R-SC). The committee endorsed Cornyn’s reelection, and has lobbied Trump to back the incumbent. 

Cornyn is also one of the top fundraisers in the party: He spent over $33 million for his 2020 Senate reelection bid, and banked over $4.1 million in his campaign account at the end of last year. A hotly contested primary could require nearly $100 million, especially if Democrats plan to contest the seat amid the GOP divide.

One of the Republicans staying on the sidelines is Sen. Ted Cruz (R-TX), Cornyn’s more-outspoken Senate counterpart. Cruz offered an early endorsement of Cornyn well before his last reelection campaign in 2020, while Cornyn raised money for Cruz during the senator’s competitive race last year against Democrat Colin Allred. (Cruz, who has close ties with both Republicans, didn’t weigh in for Paxton during his 2022 reelection when he faced a spirited primary challenge from George P. Bush.)

“Both John and Ken are friends of mine, I have worked closely with both of them. I respect them both and I trust the voters of Texas to make that decision,” Cruz told reporters at the Capitol last week. 

In Paxton’s corner is Axiom Strategies, the Texas-based GOP consultancy founded by Jeff Roe, who is a close confidante of Cruz. While Roe is not personally involved with the Paxton campaign, his work as a top strategist for Ron DeSantis’ 2024 presidential super PAC could hurt Paxton’s ability to secure a Trump endorsement.

Paxton has also received two early endorsements from a pair of House Republicans, Reps. Lance Gooden (R-TX) and Troy Nehls (R-TX). 

Surrogates for both Cornyn and Paxton have been lobbying Trump and top White House officials to endorse their respective candidates, according to several sources familiar with the political efforts. Republican operatives advocating for a Cornyn endorsement have “expressed concerns to the White House that Paxton’s run would threaten Trump’s Republican Senate majority” and have highlighted his campaign’s ties to Axiom, one source said. 

“The specter of Trump’s involvement kind of hangs over this thing,” Mackowiak said, noting that whether he weighs in and whom he throws his weight behind would “fundamentally” impact the outcome.

Brendan Steinhauser, a Texas GOP operative and partner with Steinhauser Strategies, said that Trump’s decision to withhold his endorsement, which he described as “huge” and “potentially decisive in a race like this,” suggests there isn’t a clear favorite in the contest.

“[Trump] wants to back a winner,” Steinhauser told JI. “I just really think he’s going to stay out of it. There’s no reason for him to get involved in this. He has what he wants from both of these guys, and that is that they’re in lockstep politically. They’re loyal to the president. They’re going to be good foot soldiers for him. Why does he care who it is?”

Cornyn is expected to target Paxton over his many controversies in office, including accusations of bribery and other misuse of public resources, which led to his impeachment by the Texas House and a federal investigation. He was acquitted by the Texas Senate. Prior to serving in office, he was indicted on securities fraud charges, which were later dropped as part of a settlement agreement. Paxton has denied any wrongdoing on the corruption charges.

The Texas senator and his allies argue Paxton being the party’s nominee will put the state in play for Democrats, forcing national Republicans to allocate resources to an otherwise red state that could be used for races where Democrats are on defense. In last year’s Texas Senate race, Cruz spent over $103 million to fend off a serious challenge from Allred.

Paxton, meanwhile, is expected to focus his campaign messaging attacking Cornyn’s involvement in the successful 2022 bipartisan effort to enact gun control restrictions on individuals convicted of misdemeanor crimes of domestic violence, also known as the “boyfriend loophole,” and his support for arming Ukraine in its war with Russia, two issues that put the Texas senator at odds with the MAGA wing of the Republican Party. 

In a video announcing his campaign to unseat him, Paxton cited Cornyn’s comments in 2023 describing the charges against Trump related to his handling of classified documents as “very serious” and his prediction that same year that he did not believe Trump “could win the presidency” after being found liable for sexual abuse in a civil case. Cornyn’s relationship with Trump has improved since 2023, the result of the Texas senator doing considerable outreach to the president while he was running to be Senate Republican leader last year. 

A source familiar with the thinking of the leadership at Axiom cited Cornyn’s lack of “intensity” with the Republican base as a main reason for him being vulnerable to Paxton’s challenge. 

An internal poll by Fabrizio, Lee & Associates, commissioned by political allies of Paxton, showed Paxton leading Cornyn by over 20 points, findings Axiom sources point to as another reason for confidence that the incumbent senator is beatable. (The polling firm is also used by the Trump campaign.)

A public poll conducted in February 2025 by the University of Houston found Paxton with a slightly higher favorability rating (63%) than Cornyn (54%) among Texas Republican voters.

“People like to underestimate Cornyn, but they do so at their peril,” Mackowiak said. “He’s never lost an election. He’s 19-0, and his last three primary challenges he won by 30 to 40, and 70 points. He’s one of the greatest fundraisers in the history of the state of Texas, and he does it at the federal level, where you have $3,500 per person limits. Cornyn is going to run a highly sophisticated, well-funded, professional, aggressive effort.”

Steinhauser told JI that Paxton’s strong early polling in the race is as much a function of his strengths — an imposing profile in Texas state politics and appeal with the right-wing grassroots — more than any significant Cornyn vulnerabilities.

“[Paxton] certainly has a lot of support among very active, very conservative activists in the base. So I think that that is giving him a great opportunity at the beginning of the campaign. But if it was a different candidate, I don’t think we’d be talking about the race,” Steinhauser said

Both Republicans have touted their records in support of Israel and fighting against domestic antisemitism. 

Asked by JI in the Capitol this week what makes him a stronger candidate than Paxton when it comes to addressing the concerns of Jewish voters, Cornyn replied: “He’s a con man and I’ve got a demonstrated record of support. I think I’m probably at 100%. I keep asking AIPAC, ‘Can I do any better than that?’ And they’ve said, ‘No, that’s about as good as you can do.’”

Cornyn also argued that Republicans should “absolutely” be concerned that they could lose a Senate seat to Democrats if they were to nominate Paxton over him. “It would also be about a half-a-billion dollar race in money that would be more effectively spent in Michigan, in Georgia and in New Hampshire. So I think it’s a bad idea for him to run,” Cornyn said.

Jewish Insider’s senior congressional correspondent Marc Rod contributed to this report.