In his campaign for a second term, President Trump promised to end America’s endless wars. Young men, who voted for him by a 56% majority, believed him. Then, on February 28th, 2026, Trump announced Operation Midnight Hammer, targeting Iranian nuclear sites. The attack produced a fracture in the party. Tucker Carlson criticized the attacks, describing them as “absolutely disgusting and evil.” Even Vice President J.D. Vance, according to Tyler Pager from the New York Times, “did not want the United States to go to war with Iran.”
85% of Republicans over 50 support the war, but that drops to just 49% among Republicans aged 18-29. This isn’t just a policy disagreement. It suggests a deeper ideological divide within the Republican coalition.
In 2024, Trump won a higher percentage of young men than any Republican since 1988. Conservative identity among Gen Z men jumped from 31% to 45% in just one year. But this generation hasn’t become traditional conservatives. Figures like Charlie Kirk and Tucker Carlson gave young men a simple, anti-establishment narrative that pushed back against woke culture, emphasizing traditional values, “America First” policies, and economic success. MAGA validated what young men already felt—that the system was rigged against them. They thought Trump would unrig it.
But the anti-establishment agenda is largely incompatible with the war in Iran. Influencers told young men that traditional institutions couldn’t be trusted. Stop helping other countries and focus on your own. But a war is the ultimate betrayal of these values. The same influencers who delivered young voters to Trump in 2024 are now the staunchest critics of his Iran policy, and their listeners agree. Tucker Carlson, Candace Owens, and other isolationist political commentators now shape opinions about Republican foreign policy from the ground up.
This shift is visible even at the high school level. At Fieldston, a private school in New York known for its liberal culture, the few conservatives that do exist are not traditional Republicans. They are young men influenced by political personalities–and, predictably, heavily isolationist. This February, just two weeks before the Iran attack, the Republican and Democratic clubs at Fieldston hosted a fishbowl event, where students discussed politically relevant topics. Out of all the topics, “Foreign Policy/Military Intervention” was the only one with a consensus among the students: stay out of foreign conflicts. Isolationism isn’t just a fringe position held within a faction of MAGA.
National-level polling backs this up. 53% of Republicans now say “stay out of world affairs,” the first time a majority has held this view in the 50 years pollsters have asked the question. The two leading Republican candidates for the next election personify this split. On one side is Vance, leading the isolationist wing, whom even Trump admitted was “philosophically a little bit different than me…maybe less enthusiastic about going [to war].” Rubio, representing the interventionist side, is a vocal advocate of the war in Iran.
Rubio speaks at a press conference about the US operation in Venezuela (Joe Raedle / Getty Images).
This fracture is likely to define the 2028 election. As it stands, Trump can hold the coalition together through his personality. Post-Trump, however, the party faces a choice. At the Conservative Political Action Conference (CPAC) this year, Vance polled at 53% support, while Rubio drew 35%. Despite Vance’s lead, this is a huge surge for Rubio, up from just 3% last year, likely driven by his role in the military actions in Venezuela and Iran.
The GOP establishment sees in Rubio a chance to reverse the isolationist shift. He’s more in line with pre-Trump Republicans, and party leadership thinks Rubio can win, with good reason. The establishment still controls the party structure–endorsements and traditional conservative institutions. Primaries skew old, which would help Rubio in this scenario.
But in national polls, Rubio trails Vance 43% to 14%. The gap exists because CPAC is not representative of the broader Republican electorate, which now includes large numbers of young, isolationist conservatives. Rubio is exactly what their influencers taught them to reject, and they’re backing Vance. Donor money and party endorsements can’t override that.
Predictions like these come with an inherent problem: every generation thinks it’s special. Young people always rebel before moderating into the establishment they once fought against. But past rebellions had institutions worth trusting. Gen Z grew up witnessing 2008, the war in Iraq, and COVID. There is no reason for young voters to trust the establishment, and every reason not to. This isn’t just a phase the establishment can wait out but a feature of how my generation thinks.
The GOP primary in 2028 will answer a fundamental question: Does the party belong to its young isolationist base or its old interventionist establishment? The young men appear positioned to win. Both liberal institutions and old school conservatives are missing the same thing about the rightward male shift. They assumed that these young conservatives would eventually adopt traditional party positions, but they have not. Isolationism is ingrained too deeply into the ideals that they have learned to support.
Even time itself works against the establishment. Every election cycle brings more of this generation into the electorate and removes older interventionists from it. When Trump attacked Iran, he accelerated the young male isolationist shift within the Republican Party. Yes, he broke a campaign promise. But more importantly, he gave his own new base motivation to prevent an interventionist from starting another war. The establishment can fight this transformation. But demographics, infrastructure, and ideology are all against them.
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