Oil Plunges 8% After Democrats Sweep Midterms, Betting on Iran War's End

Oil markets delivered their own verdict on the midterm elections: West Texas Intermediate crude crashed 8.3% on Wednesday, November 4, settling at $88.12 a barrel — a drop of more than $8 in a single session — as traders concluded that a Democratic sweep of Congress would force the Trump administration toward a diplomatic exit from its war with Iran.

Brent crude, the global benchmark, fell 8.7% to settle at $94.62, touching its lowest level since September 4, according to oilprice.com. Both benchmarks had been trading near $118 (Brent) and $104 (WTI) just days earlier. The three-day drop of roughly 15% for WTI was its steepest since November 2021, according to Yahoo Finance.

The reason we lost is the war. The president himself said so last night.— Vice President JD Vance

Vance's social media post, published Wednesday, crystallized what the market was already pricing. Tuesday's elections handed Democrats control of both the House and Senate, positioning the party to limit military funding and push President Donald Trump toward ending a conflict that has driven up gasoline and diesel prices. On Tuesday night, Trump attributed the Republican loss to fuel costs, telling Fox News, "I think it's the gasoline price," and he separately told the Financial Times he has no immediate plans to strike Iran, according to oilprice.com and CNBC.

The elections are leading the market to conclude that Trump might now be inclined to make a deal.— Andy Lipow, president of Lipow Oil Associates

The election results may pressure the president to seek to end the war more quickly.— Wells Fargo Investment Institute

The sell-off rippled across energy markets. Gasoline futures were on track for their lowest close since March 10, the Energy Select Sector SPDR Fund (XLE) fell more than 5%, and refiners Marathon Petroleum and Valero each dropped roughly 8% to 10%, according to Yahoo Finance. A decline of around 7% in heating oil futures followed an Energy Department announcement that it would loan 300,000 barrels — nearly a third of the Northeast Home Heating Oil Reserve — to four companies, a move that came after senators pressed for action when diesel prices climbed above $6.50 a gallon, according to oilprice.com.

Eight months of war with Iran have thrown global energy supplies into disarray. According to Vortexa data cited by oilprice.com, Gulf exports of crude, condensate, and products averaged 17.1 million barrels per day in October, a drop from 18.9 million in September and roughly three-quarters of pre-war levels. U.S. diesel stockpiles stand at their lowest point since 2003, with distillate stocks running 13% below the five-year average, according to the EIA. Even with Wednesday's crash, WTI remains roughly 50% above where it started 2026, near $57, having peaked near $113 on April 7, according to Yahoo Finance.

Oil is retreating on hopes for a deescalation in the Iran conflict, even as the diplomatic signals remain ambiguous.— Mark Hackett, chief market strategist at Nationwide

Not everyone sees a clear path to peace. Bob McNally, president of Rapidan Energy and a former advisor to President George W. Bush, warned that the odds still favor military escalation. McNally said, "Iran is hardened in its uncompromising position," and added that Trump, "having now paid a huge price for his determination to prevent Iran from obtaining a nuclear weapon, is unlikely to let go of this legacy goal and walk away," according to CNBC. In a written statement, Iran's Supreme Leader Mojtaba Khamenei said U.S. hostility would persist regardless of which party holds power, according to oilprice.com.

The sell-off could be getting a bit overdone. The market is in a 'shoot first, ask questions' later mode as emotions run high after the unexpected election results.— Rebecca Babin, senior energy trader at CIBC

The selling overrode bullish supply data released the same day. In the week ended October 30, U.S. commercial crude inventories declined by 900,000 barrels to 409.8 million — sitting 4% below the five-year average — according to the EIA, as reported by oilprice.com. By November 6, WTI had partially recovered to $91.55 and Brent to $99.73, according to World Oil Monitor, though both remain well below their late-October peaks.

According to Yahoo Finance calculations, the closest historical parallel is Trump's first midterm in 2018, when Democrats captured the House and crude slid roughly 18% between Election Day and the end of that November. The current three-day slide of roughly 15% already approaches that scale, with weeks of political maneuvering still ahead.

Why it matters — A single election night erased weeks of war-premium from oil prices, cutting gasoline futures and energy stocks sharply — but analysts warn the diplomatic path to ending the Iran conflict remains unclear, leaving fuel prices volatile for consumers.

Sources differ on Brent crude settlement price on November 4: $94.62/barrel (cnbc.com) vs $94.66/barrel (oilprice.com)

Reported by washingtonpost.com, wsj.com, reuters.com, worldoilmonitor.com, business-standard.com, oilprice.com, finance.yahoo.com, telegraph.co.uk, cnbc.com