Vice President JD Vance is pointing to the war with Iran as the reason Republicans lost control of Congress in the 2026 midterm elections. In a social media post on Nov. 4, he argued that the conflict had cost his party both the House and the Senate, which Democrats flipped in Tuesday’s vote. “The real reason we lost is obvious to almost everyone… The reason we lost is the war,” Vance wrote. That puts him in a different position from President Donald Trump. According to the Wall Street Journal, the president has acknowledged that the conflict hurt Republicans at the polls, but he has shown no sign of regretting the decision to launch the military campaign. JD Vance wonders if the Iran war was worth losing the Senate “for the next 6 years” “I did the right thing. I would have done it again,” Trump said in interviews after the election. He has maintained that preventing Iran from developing nuclear weapons justified the political cost. Vance, however, wants Republicans who still defend the war to reckon with what it cost them. He challenged supporters of the campaign to explain why losing control of the Senate was a price worth paying. “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,” he wrote. One of the things the data analysts on our side obsessed over was "composition"—whether the electorate looked close enough to 2024 for Republicans to win. And despite polls that showed a Democrat blowout, the data kept on telling us the same story: in some states turnout was merely OK, in other states it was downright amazing, and in no state was it catastrophic. There was a genuine sense of optimism on our team: our people were showing up. So, I asked the smartest data guy I know, does that mean we’re going to shock the world? "No," he told me. "We might do better than the polls suggest. But the data is telling us that a lot of Trump/Vance 2024 voters are pissed and planning to vote for the other guys. Our voters are turning out, but they may not vote for us." Well, that looks prophetic now. Our voters did show up. In Florida, for example, the electorate was 9 points more Republican than Democrat, just a couple points worse than 2024. Undoubtedly there were places we could have done better on turnout. But the main problem is not turnout. The main problem is that many people who voted for Trump/Vance in 2024 voted for Democrats in 2026. There will be a lot of infighting and arguing over what happened and why that is. One of the pollsters I really respect told me that our economic messaging wasn’t sharp enough down the stretch. I’m sure that’s true. But the real reason we lost is obvious to almost everyone. Another pollster—one of the smartest people I know in politics, told me yesterday we’d lose the generic ballot by 13 points. I felt negative going into Tuesday, but even I was shocked by this. In his polling, he saw that a lot of Trump 2024 voters were angry and planning to vote for Democrats. He asked those voters who had abandoned us what would cause them to come back on our team. The top four answers, accounting for nearly all of the responses were: 1) End the war 2) Focus on cost of living/inflation 3) Put America First 4) Change our relationship to Israel Our voters showed up. And the above four reasons are why many of them voted for Democrats. This is according to a pollster who nailed the results. While many spent Monday attacking Rachel Campos Duffy for calling for a diplomatic resolution to the conflict, it turns out her political advice was sound. (She’s also a great person.) In the next few months, there’s going to be a lot of gaslighting. Expect to hear any number of establishment politicians say the solution to our woes is amnesty. I’m open to the idea that we should change enforcement—by focusing more on businesses that hire illegal labor, for instance. But anyone pushing amnesty is lying to you. The reason we lost is the war. The president himself said so last night. 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. Argue it was a worthwhile cost to pay. 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. I remain hopeful about our country. To the people who are pissed off and want to say, “I told you so”: you’re right, you did tell us so. Take that energy into electing Republicans who share your worldview. To the people who are just pissed at the results, you should be. Let’s take that anger and get back to the work of saving our country.— JD Vance (@JDVance) November 4, 2026 The losses leave Republicans facing a difficult stretch. Democrats will now control both chambers of Congress, giving them the power to scrutinize the administration’s decisions and challenge its agenda during the final two years of Trump’s term. But there were also other reasons voters turned against Republicans. Domestic issues and dissatisfaction with the administration also contributed to the Democratic gains. Vance has nevertheless chosen to put the war at the center of his explanation, an argument that may not sit well with everyone in his party. Republicans who backed the campaign have defended it on national security grounds. Their position is that stopping a foreign threat mattered more than the damage it might do at home. But the conflict has also brought rising costs and growing frustration among voters, making that argument harder to sell after the election. Democrats are already looking ahead According to Politico, Democrats are already looking ahead to what they can do with their new majority. Party leaders have promised tougher oversight of the White House, including its decisions on military spending and foreign deployments. Investigations, subpoenas and fights over the budget are likely to feature prominently in the next two years. Vance has previously expressed concerns about prolonged foreign conflicts and their costs. His comments place him at odds with Trump over the war, while also reflecting a position he has taken on U.S. military involvement abroad. The disagreement comes as Republicans begin assessing the party’s losses and looking ahead to the 2028 presidential election.