Democratic elections often produce a familiar paradox: Candidates with extreme positions on certain issues can still win broad support because voters connect more strongly with a different, emotionally resonant message. Americans have grown accustomed to seeing this dynamic on the political left, where themes such as affordability or social justice can outweigh a candidate’s hostility toward Israel. A more unsettling question now emerges on the right: Can the same mechanism allow candidates or public figures with troubling views on Israel or Jews to gain traction among Republicans?
Our recent survey of 561 Republicans—balanced by age and gender, and conducted on Jan. 21-22, with a margin of error of plus or minus 4%—sought to explore precisely this tension.
We used the popularity of former Fox News host and current political commentator Tucker Carlson as an indicator of broader Republican sentiment. He is a useful case study because he has shifted from being a mainstream conservative media figure to a polarizing personality who is widely perceived as unsupportive of Israel and, by many observers, as promoting or tolerating antisemitic narratives. Yet despite this, he remains highly popular within the Republican electorate.
The first major finding is a clear generational divide. Across the entire sample, we found more than 45% of respondents believed that Carlson is likely to run for national office, and more than 48% said they would vote for him if he did.
Among Republicans under the age of 44, support was substantially higher: More than 55% saw him as a likely candidate, and more than 58% said they would probably vote for him. Among Republicans aged 45 and older, enthusiasm dropped sharply, with only 38% believing that he would run, and 41% expressing willingness to vote for him.
Carlson’s potential political appeal, in short, is significantly stronger among younger Republicans. Ours is not an “outlier” finding, as other data, especially a recent study from the Manhattan Institute think tank, show similar results.
At first glance, these numbers might be interpreted as evidence of growing anti-Israel or anti-Jewish sentiment within the Republican base. Our data suggests a more complex or nuanced reality. Perhaps counterintuitively, support for Carlson does not automatically translate into hostility toward Israel or Jews. Both age cohorts continue to show substantial support for Israel and generally positive views of Jews, although younger Republicans are consistently less supportive than their older counterparts.
When asked about the importance of various foreign-policy issues, younger Republicans rated support for Israel as “very important” or “extremely important” at a rate of 55%, compared with 69% among those aged 45 and above. This gap is meaningful, but it does not indicate outright opposition. Rather, for younger Republicans, the State of Israel appears to occupy a similar priority level as other foreign-policy issues, rather than standing out as uniquely significant. This suggests a broader generational shift in how international commitments are ranked, not necessarily a singular rejection of Israel.
The more troubling signal emerges when respondents were asked whether certain groups pose a threat to the “American way of life.” On immigrants and Muslims, age differences were modest, with majorities in both cohorts expressing at least moderate concern.
On Jews, however, the generational gap was pronounced. Some 45% of Republicans under 44 expressed elevated concern, compared with 23% among those 45 and older. Even though Jews were still viewed as less threatening than other groups, the fact that nearly half of younger Republicans expressed this level of concern should not be dismissed lightly. It points to a growing susceptibility to narratives that frame Jews as a societal problem, even among voters who do not consider themselves antisemitic.
How can these findings be reconciled? How can substantial support for Israel coexist with a strong willingness to back a figure associated with anti-Israel rhetoric?
The answer lies in political psychology.
Voters frequently prioritize a candidate’s overarching message, tone or identity over specific policy positions. Well-documented mechanisms such as motivated reasoning, the halo effect and affect-based heuristics allow individuals to focus on what they like about a candidate, while minimizing or rationalizing aspects that they find troubling. For some people, their “halo” glows brightly enough to blind observers from any negatives. Israel becomes unimportant and even irrelevant to political decision-making, especially for younger Americans.
This is the core warning of our study. The principal risk to Israel and to Jewish communities may not be an immediate collapse of Republican support; rather, it is the gradual erosion of Israel’s role as a politically decisive issue.
If Israel becomes a non-disqualifying concern, something voters are willing to overlook, then candidates with hostile or extreme positions can advance without paying a political price. We have seen this dynamic elsewhere, where once-disqualifying views fade into the background amid louder populist appeals (witness the “affordability” campaign of New York City Mayor Zohran Mamdani).
For Israel and for American Jewish communities, the implication is clear. It is no longer sufficient to ask whether “most Republicans support Israel” in the abstract. The more important question is whether that support is strong enough to influence voter behavior when faced with a charismatic populist who offers a trade-off: cultural combat at home in exchange for indifference or hostility toward Israel.
Our findings also suggest a strategic lesson. Research shows that appealing but flawed candidates can lose their aura when a single negative trait is clearly and repeatedly highlighted, a phenomenon known as the “horn effect.” This does not mean reckless attacks or caricature. It means honest, focused and consistent scrutiny that exposes the real consequences of a candidate’s views. Those who care about the future of the U.S.-Israel relationship may need to confront popular figures early and directly before favorable impressions harden.
Yet there is good news in our data. Republican support for Israel has not collapsed, and younger Republicans are not uniformly anti-Israel or anti-Jewish.
And, of course, there is bad news. The psychological machinery that allows voters to ignore troubling positions is already operating, and it appears to be stronger among the rising generation. The critical question is not whether Israel still matters to Republican voters in principle, but whether it will matter enough when it truly counts.
The task is moving from the halo to the horns.
