“The real reason we lost is obvious to almost everyone,” Vice President J.D. Vance claimed Wednesday after the Republicans’ midterm election loss. “The reason we lost is the war. … If you’d like to argue it was worth it, that losing the Senate for the next 6 years was worth it, then do so. … Agree or disagree, that’s at least honest. But everyone knows why we lost. And any honest conversation about where we go from here must start there.” But real life rarely confines itself to such narrow narratives; as with most things, the reasons for the 2026 electoral defeat were far more complex.

That isn’t to say that Vice President Vance was entirely wrong. According to the 2026 exit polls, some 34% of voters described the war in Iran as “crucial” to their vote for Congress, and another 40% described it as “a major factor.” Of the voters who called the war “crucial,” 72% favored Democrats, as did 58% of voters who called the war a major factor.

These figures, although sizable, did not make the war in Iran the issue most dominating voters’ attention. In the same poll, 55% of voters said government corruption was a crucial factor, and 36% called it a major factor. Likewise, 49% of voters said the cost of living was a crucial factor, and 40% called it a major factor. Two-thirds of voters who described these issues as crucial factors favored Democrats.

Indeed, exit poll responses gave the Iran war a weight roughly equivalent to immigration enforcement policies, with 36% of voters saying these policies were crucial to their vote, and 36% saying they were a major factor. Voters who rated immigration enforcement as significant slightly favored Republicans.

These results put the Iran war in a rough tie for the third-most significant issue of the midterms. However, when asked to compare issue areas of importance, voter concern over the war virtually disappeared. When asked which one of the six issues was “the most important facing the country,” foreign policy ranked a dismal fifth, behind the economy (39%), the state of democracy (33%), immigration (14%), and even health care (8%). Only crime (3%) ranked lower. Interestingly, voters who cited foreign policy as their top concern slightly favored Republicans (50%) over Democrats (47%).

How should these results be interpreted? One option is that many voters viewed the Iran war as an important factor but not the most important. However, it would be surprising if every voter concerned about the Iran war rated it as second-most important, such that it was entirely invisible as a first-order issue.

Another option is that the voters most concerned about the Iran war classified that concern not as a matter of foreign policy but as something else.

The two readiest candidates are the two most important issues. Voters may have classified the Iran war as an economic issue if their concern was not with the conduct of the war so much as its effect on gas prices. Voters may have classified the Iran war as a “state of democracy” issue if they were concerned less with America’s engagement in the war and more with President Trump unilaterally embroiling the nation in a conflict, to the exclusion of Congress.

This possibility opens yet another can of worms. When voters express disapproval with the Iran war, what precisely is their objection? Do they object to the fact that the U.S. used kinetic force to prevent the Iranian regime from manufacturing a nuclear weapon? Or are their concerns more piecemeal?

Perhaps voters object to the Trump administration entering a war without first persuading the public, the evasion of congressional authority, the strategic decision to launch a war without ever putting boots on the ground, the tactical whiplash between bombing and negotiating, the failure to meaningfully help Iranian protesters, or the slowness to choke off Iranian oil.

Perhaps voters are only aware of any of these points in the vaguest of terms, and their view of the Iran war goes no further than the gas pump.

In other words, even if it were granted that the Iran war was the primary cause of the Republican defeat, that would only introduce the more challenging and fruitful question: which aspect of the Iran war?

As a standard-bearer for MAGA’s isolationist wing, Vance’s immediate instinct to blame the war is unsurprising. After all, he had opposed it from the beginning. And, as the party looks beyond Trump toward the 2028 election, foreign policy disagreements will feature prominently in the political jostling between, for instance, Vance and Secretary of State Marco Rubio, a foreign policy hawk.

Yet Vance also played a role in the Iran conflict, pushing for diplomatic delays that failed to achieve breakthroughs, while allowing Iran to regroup. The various roles played by the various contenders make the question, “which aspect of the Iran war did voters reject” all the sharper.

At least for now, President Donald Trump seems to have arrived at conclusions quite similar to those Vance expressed. When asked about Vance’s declaration, Trump admitted last Wednesday it was “largely true,” while contending, “If I had it to do again, I’d have to do it again because, long term, it’s the only answer. You can’t let Iran have a nuclear weapon.”

In a “60 Minutes” interview aired Sunday, Trump repeated the same opinion, adding that he had prior knowledge of what Vance would say. Trump only wished that Vance would have specified whether, if he had been in Trump’s position, he would have made the same decision to launch the war. Such comments imply that the U.S. president had quite specific intelligence about Iran’s growing nuclear capabilities — intelligence which all but required him to act.

It is quite possible that neither man may ever countenance another opinion — one that places blame for the conflict somewhere besides the Iran war. The other obvious cause of rising prices is the tariffs. By definition, tariffs are taxes on goods that will be passed through to American consumers. The tariffs not only raise prices, but they were also imposed arbitrarily and haphazardly, saw dramatic fluctuations, and were imposed directly by Trump without congressional input and in defiance of judicial input.

The National Taxpayers Union pointed out that “Nine of the ten states with the highest tariff cost-per-household held Senate elections, and seven of those states (Georgia, Illinois, Michigan, New Jersey, Rhode Island, South Carolina, and Texas) elected Democrats.”

This framing must be taken with a grain of salt. Three of those states (New Jersey, Illinois, and Rhode Island) would likely have voted Democrat in any environment, and two states (Tennessee and Kentucky) voted Republican anyway. But the point is well-taken. Were observers surprised by election outcomes in South Carolina, Texas, and perhaps Michigan? Those results may be due in part to tariffs costing the average household $6,485 in Michigan, $4,664 in South Carolina, and $3,866 in Texas since January 2025.

Despite both evidence and theory, Trump seems to believe in the goodness of tariffs more than just about anything else. As a result, criticism of tariffs has become a mark of heresy to the more religious devotees of MAGA.

This taboo has no power over ordinary voters, however. In the 2026 exit polls, a whopping two-thirds of Americans (66%) said that “Trump’s tariff policies” have hurt the economy, compared to only 21% who said they have helped. Those who believe the tariffs hurt the economy favored Democrats over Republicans 81% to 18%. Those who said tariffs helped the economy favored Republicans 96% to 4%, and those who said they made no difference (12% of the total) favored Republicans 86% to 11%.

Mainstream Republicans argue that Trump’s poll numbers began to decline after he imposed the “liberation day” tariffs on April 2, 2025, and that the party was already struggling long before the Iran war began on February 28, 2026. When the exit polls show voters’ concern with the high cost of living, proponents of this view argue that tariffs are a major cause. According to the one question in the exit polling that specifically mentioned tariffs, voters seem to agree.

In light of the data, the war is not the one “obvious” reason for the Republican loss. It is not even obvious that there is one primary reason. Certainly, the Iran war played a role, although what role and which aspect of the war remain subject to interpretation. It is equally certain that other factors contributing to a higher cost of living, such as tariffs, also played a role. The decisions of 124 million voters hardly ever boil down to one simple narrative, and the 2026 election was no exception.