Democrats flipped seats in South Carolina, Texas and Kansas, and won governor races in Texas, Ohio and Georgia. They are expected to hold at least 54 Senate seats and between 251 and 268 House seats, so President Donald Trump will face a Democratic Congress for the rest of his term.

Vance said low Republican turnout was not the main problem. In his telling, many people who voted for Trump and Vance in 2024 switched to Democrats this time. He named four issues behind the switch: ending the war, the cost of living and inflation, putting America first, and changing the relationship with Israel. Those four, he said, covered almost all the views of the voters who turned away. He also described a conversation with a data analyst who warned that even where turnout looked acceptable, a large share of the 2024 Republican base was angry and planned to vote Democratic.

Vance pointed to Florida, where the electorate was 9 points more Republican than Democratic, only slightly below the 2024 margin, and Republicans lost anyway. He also cited a pollster he called one of the most capable in politics, who had predicted Republicans would lose the national congressional vote by 13 points. Accounts differ on whether that figure came from a public survey or internal polling.

Vance suggested that losing the Senate for the next six years may not have been worth it. He said some may argue the loss is a price "worth paying" for the war, but that he believes the public disagrees. He conceded that the Republican economic message "wasn't sharp enough" in the final weeks, though he still called the Iran conflict the decisive factor. He defended Rachel Campos-Duffy, saying her advice to seek a diplomatic solution had proven correct, and urged disappointed Republicans to put their dissatisfaction into electing candidates who share their views.

Trump's own position is described differently. He has called the war a "very wise decision" and has said the losses came from his not being on the ballot. Other accounts say he acknowledged the war was partly to blame.

The war began on February 28 with an offensive by the United States and Israel against Iran, and Trump launched it with a pledge that it would last four to five weeks. It is now in its eighth month and has contributed to higher gas prices. A July poll found support for the war had fallen to one-third of Americans, and 69% of Americans, including 40% of Republicans, said Trump had not clearly explained its goals.

The war has cost more than $47 billion, 25% above the Defense Department's July estimate. A Congressional Budget Office analysis found it had used up as much as two-thirds of the Pentagon's missile-defense interceptors since July 2025, and rebuilding that stock could take five years. At least 23 US troops have been killed and more than 860 wounded. Defense Secretary Pete Hegseth, who asked Congress in July for $67.1 billion in emergency funding, faces scrutiny and possible calls for impeachment. He has blamed prior leadership for the costs.