Republicans lost the midterm elections because of the war with Iran, United States Vice President JD Vance said.

According to Vance, many of those who voted for Trump and Vance in 2024 voted for Democrats in 2026, demanding an end to the war, a focus on the cost of living, priority to the United States and a change in the relationship with Israel. Voter frustration over the war and the relationship with Israel sealed the defeat, in a distancing from Donald Trump — who acknowledged the weight of gasoline prices but defended the decision to start the conflict — ahead of a possible 2028 White House bid.