WASHINGTON — President Donald Trump is facing a widening political backlash as the Iran war drives U.S. fuel costs higher and turns a familiar pocketbook issue against Republicans before the midterm elections, May 4, 2026.
The pressure is building because drivers are seeing the war’s cost in real time at the pump, where the AAA national average for regular gasoline reached $4.457 a gallon Monday, up from $3.165 a year earlier. Diesel stood at $5.641 a gallon, raising the risk that transportation costs will keep feeding into grocery, delivery and travel prices.
Why gas prices are now a midterm problem
Gasoline is a blunt political instrument because voters encounter it repeatedly, often in large roadside numbers. That makes the latest spike especially dangerous for Trump, who returned to office promising to lower inflation and restore affordability.
A Reuters/Ipsos poll found that 77% of registered voters said Trump bears at least a fair amount of responsibility for the recent rise in gas prices. The survey also found 58% of voters would be less likely to support midterm candidates who back Trump’s approach to the Iran conflict.
That finding cuts to the heart of the Republican midterm argument. For years, GOP candidates used high fuel prices as shorthand for Democratic economic mismanagement. Now Democrats are using the same message against Republicans, tying the price of a gallon of gas to Trump’s decision to wage war with Iran alongside Israel.
The Iran war is keeping oil markets on edge
The fuel shock is rooted in a broader oil disruption. The U.S. Energy Information Administration said crude oil and petroleum product prices increased sharply in the first quarter after military action in the Middle East on Feb. 28 and the subsequent de facto closure of the Strait of Hormuz.
The International Energy Agency said reopening flows through the strait remains the single most important factor in easing pressure on energy supplies, prices and the global economy. The agency said early April shipments through the strait were far below precrisis levels, even as some exports shifted to alternative routes.
Markets remain volatile. Oil prices rose about 5% Monday after reports of a possible confrontation involving a U.S. warship near the Strait of Hormuz, while Reuters said the reports could not be independently verified and cited a U.S. official denying that a U.S. ship was hit. Brent crude traded above $113 a barrel, and West Texas Intermediate topped $107.
OPEC move offers little immediate relief
OPEC+ producers are trying to show they can calm the market, but their room to maneuver appears limited. The Associated Press reported that seven OPEC+ countries, including Saudi Arabia and Russia, agreed to raise production by 188,000 barrels per day starting in June.
The increase is modest compared with the disruption. AP reported that Iran’s blockade of the Strait of Hormuz has stopped much of the oil shipped from Gulf producers and removed millions of barrels a day from the global market. That means even new production pledges may do little for U.S. drivers unless shipping lanes reopen and traders believe the risk premium is fading.
Gas prices have a long political memory
The current fight echoes 2022, when President Joe Biden tried to blunt voter anger over inflation and fuel costs before the midterms. Weeks before that election, Biden ordered a release from the Strategic Petroleum Reserve, a move AP described in an October 2022 report on Biden’s oil reserve release.
Biden also sought a temporary federal gas tax holiday that year, but the proposal faced resistance in Congress. Reuters reported at the time that Biden’s gas tax holiday request was intended to combat record pump prices but lacked clear support even among some Democrats.
Inflation ultimately dominated voters’ concerns in that midterm cycle. AP VoteCast found in November 2022 that inflation was the top issue for voters, underscoring how quickly high prices can overwhelm other campaign themes.
Trump’s challenge is time
The White House can argue that Iran, not Trump, is responsible for disrupting Gulf shipping. But voters often judge presidents by results, not supply-chain mechanics. That leaves Trump with a narrow political path: show progress toward reopening the Strait of Hormuz, push allies and producers to increase supply, and convince households that the pain will ease before November.
The danger for Republicans is that relief may not arrive quickly enough. If gas prices stay near current levels into the summer driving season, the Iran war could become more than a foreign policy dispute. It could become the daily cost-of-living reminder that shapes control of Congress.
