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What happened on November 3

Republicans lost the House, the Senate and a string of governorships on Tuesday, in one of the most lopsided midterms of the modern era. NBC News projects Democrats will win at least 258 House seats, 40 more than a majority. CBS News puts the range at 251 to 268 while dozens of races are still being counted.

The Senate flipped too. Democrats took seven Republican-held seats — Iowa, Kansas, Maine, North Carolina, Ohio, South Carolina and Texas (Northeastern Global News). CBS projects at least 54 seats for Democrats and the two independents who caucus with them, with Alaska and Mississippi still uncalled.

The losses ran through places Republicans had stopped worrying about. In Texas, James Talarico beat Ken Paxton for the Senate, and Gina Hinojosa unseated Gov. Greg Abbott, the first Democrat to win the governorship in more than 30 years. Kansas elected Adam Hamilton, its first Democratic senator since 1932.

Why it happened is less mysterious than its scale. Exit polls describe an electorate squeezed by prices, sour on the war with Iran and on tariffs, and voting against a president whose approval stood at 38 percent. The sections below take those forces in turn, then weigh the explanations Republicans are offering.

The midterm penalty, at full strength

The president’s party almost always loses ground in a midterm; the open question is how much. Since World War II, the average House loss has been 26 seats (Yahoo News, citing Brookings).

Political science offers two durable reasons. Disapproving voters are more motivated than approving ones, which Samuel Kernell called “negative voting.” And opinion drifts against whatever the governing party is doing, Christopher Wlezien’s “thermostat.”

Both mechanisms scale with the president’s standing, and Trump’s was historically weak. His approval was 38 percent in the CBS News exit poll, on track to be the lowest for any president at a midterm. That is below his own 2018 number and below George W. Bush’s in 2006, the year Republicans lost both chambers.

Polling averages told the same story beforehand: Trump was more than 20 points underwater, about double his deficit before the 2018 midterm. Unified control left Republicans no one else to blame for prices, the war or anything else voters disliked.

On current projections, 2026 belongs with the postwar wave elections; the midpoint of the range would be the seventh-largest loss since 1946.

The pocketbook: prices, gas and tariffs

The cost of living decided this election more than any other issue. Nine in ten voters told CNN’s exit poll it was a crucial or major factor in their vote. Two-thirds blamed Trump for worsening economic conditions.

The Iran war turned a chronic complaint into an acute one, keeping the Strait of Hormuz largely closed for more than eight months (Yahoo News). Gas averaged $4.15 a gallon on Election Day, the highest of any Election Day on record (CBS News, citing AAA). When Trump won in 2024, it was $3.10.

In NBC’s exit poll, 87 percent of voters were concerned about fuel prices, and 57 percent of that group voted Democratic. Three in four rated the economy not so good or poor.

Tariffs and health costs added to the bill. Most voters told CBS that Trump’s tariffs had hurt the economy; in Maine, 69 percent said they had harmed the local economy. Meanwhile, enhanced Affordable Care Act subsidies had lapsed, and the president’s domestic policy law cut nearly $1 trillion from Medicaid (Yahoo News, citing the New York Times).

The irony is hard to miss. Prices helped carry Trump back to the White House in 2024. Two years later, with Republicans holding every lever in Washington, prices carried his party out of Congress.

A referendum on Trump

Midterms are referendums on the president, and voters said so plainly. Roughly six in ten told CBS that Trump was a factor in their House vote. In NBC’s exit poll, 43 percent said opposing him was one reason for their vote, more than in 2018.

The intensity ran one way. Democratic voters were overwhelmingly motivated by opposition to Trump, CBS found, while fewer Republican voters than in 2018 said they were voting to support him. Among MAGA Republicans, most said their vote was for Trump; most other Republicans said he was not a factor.

Trump had invited the framing, telling supporters to vote as if he were on the ballot. Asked whether members had voted that way, the head of the Iowa Farmers Union told CBS, “They did.” Rural Iowa swung Democratic, and Republicans lost three of the state’s four House seats.

The war was part of the verdict. Most voters told CBS that the decision to take military action against Iran was wrong, and most said the administration’s immigration enforcement had gone too far. A Gallup poll in October found 47 percent calling the war extremely important to their vote, close to the economy and health care at 50 percent (Yahoo News).

Even Republicans who had kept their distance from Trump went down with him. Rep. Brian Fitzpatrick, one of the few House Republicans who voted to limit further strikes on Iran, lost in Bucks County. In Maine, most voters said Susan Collins had backed the president too closely; she lost after nearly 30 years.

Who moved

Part of the Republican coalition did more than stay home; it switched sides. Vice President JD Vance conceded as much on Wednesday, writing that “many people who voted for Trump/Vance in 2024 voted for Democrats in 2026” (Arab News). CNN’s exit poll found about one in five of Trump’s 2024 voters disapproving of his job performance.

The groups behind Trump’s 2024 gains swung back. Young voters, Latinos and women all backed Democrats for the House, and Democrats’ margin among women was similar to 2018 (CBS News). Men, whom Trump won by double digits in 2024, split their votes, and white women narrowly favored Democrats.

Independents decided it. CBS credits Democrats’ lead among them with putting the party over the top, in an electorate only slightly more Democratic than in the last two elections.

The swing shows up on the map. Counties Trump won in South Carolina moved about 21 points toward Democrats on average, per a New York Times analysis (Northeastern Global News). In South Texas, Latino voters swung left after moving toward Trump in 2024 (Texas Tribune).

Enthusiasm ran the same way. Five days out, early voting was nearly 10 million ballots ahead of 2022’s pace, and registered Democrats outnumbered registered Republicans among early voters, 43 to 31 percent, in states that report party (Yahoo News). Final turnout figures are not in yet.

Not every group moved left. Half of Jewish voters identified as Democrats, down from 64 percent in 2018, according to the NBC News exit poll.

The maps: a gerrymander that backfired

Republicans tried to protect their House majority by redrawing districts mid-decade, and in a wave the plan worked in reverse. At Trump’s urging, Texas redrew its map in 2025, turning five Democratic seats into districts Trump would have carried by at least 10 points (Texas Tribune). California answered with Proposition 50, which voters approved 65 to 35 percent in November 2025 (Ballotpedia).

The Texas map produced one Republican pickup out of five targets, and the party lost two seats it already held. Texas Republicans will have 24 House seats in January, one fewer than at the start of the current Congress (FOX 4). In Florida, Democrats held three districts that had been redrawn to favor Republicans (CBS News).

Gerrymanders win extra seats by spreading a party’s voters thinly across more districts. That works in a normal year and fails in a wave, a risk political scientists call a “dummymander.” Texas also bet that Trump’s 2024 gains with Latino voters would hold; Latinos were a majority of eligible voters in four of the five targets, and they swung back.

The maps did not cause the defeat, but they measure its breadth. The swing was large enough to overwhelm district lines drawn specifically to resist it.

The Republican case

Republicans have offered four explanations of their own. Each captures part of the story.

Trump was not on the ballot. The White House argues its voters turn out for Trump, not for other Republicans; he wrote on election night that with his name on the ballot, “we would have won IN A LANDSLIDE” (Scripps News). Turnout played a part, but Vance’s own diagnosis was defection by 2024 Trump voters.

Candidate quality. Some nominees were weak: Ken Paxton carried a 2023 impeachment and corruption allegations into the Texas race (Northeastern Global News). Yet the losses also took down incumbents such as Susan Collins and Kansas’s Roger Marshall, and Trump’s endorsements helped pick several of the nominees now being blamed, including Paxton over Sen. John Cornyn.

A temporary price shock. The White House predicts voters will regret their choice once the Iran conflict ends and gas prices fall. Vance was blunt: “The reason we lost is the war” (JTA). Trump agreed on Wednesday that the war was largely to blame, while saying he would do it again (Arab News).

History. The president’s party nearly always loses ground in a midterm, as Trump warned during the campaign. True, but history predicts a loss, not a rout; the margin tracked his approval.

The strongest version of the Republican case is that 2026 was a thermostatic correction, not a realignment. Voters still preferred Republicans on immigration, 44 to 41 percent (Washington Examiner, citing NBC), and just over half viewed the Democratic Party unfavorably (CBS News). Northeastern political scientist Martha Johnson cautions against reading the result as an endorsement of a Democratic agenda.

What it means

Trump will spend his final two years facing a Democratic Congress. Hakeem Jeffries is in line to become the first Black speaker, and Democrats have previewed an opening agenda aimed at the issues that drove the vote: restoring ACA subsidies, reversing the Medicaid cuts, ending the tariffs and forcing a decision on the Iran war (Yahoo News, citing the New York Times).

Trump has promised vetoes and points to a Supreme Court ruling this year that widened his control over federal agencies (CBS News). Expect oversight, funding standoffs and war-powers votes more than landmark laws. Chuck Schumer has already suggested Democrats could use control of government funding to push for ending the war (Arab News).

For students of foreign policy, that fight is the one to watch. Iran’s parliament speaker has already cast the result as Americans rejecting the war (CBS News). Analysts also expect a Democratic Congress to push back on paused Russia sanctions and on threats to NATO (Northeastern Global News).

Republicans, meanwhile, have started their reckoning. Speaker Mike Johnson told staff he will not stay on as the party’s House leader (NBC News), and Vance’s break over the war previews a 2028 argument about Trump’s foreign policy. The deeper lesson is an old one: a party that runs everything owns the prices, the wars and the national mood, and on Tuesday voters judged all three.