Fuel price hikes have become the defining flashpoint across Kansas as candidates vie for the U.S. Senate and the governorship ahead of the November 3 election, with political campaigns clashing over the root causes of surging gasoline and diesel costs.
Topeka Speech Targets Federal Energy Policy
Sen. Roger Marshall, Vice President JD Vance blamed tinpot dictators in the Middle East, former President Joe Biden, and other Democrats for the state’s soaring fuel prices. Vance did not attribute higher U.S. fuel costs to President Donald Trump or Republicans controlling Congress. Instead, he pointed to the loss of 20% of California’s refining capacity while Biden was president and criticized Democratic proposals for the Green New Deal emphasizing greater reliance on renewable energy sources like wind and solar over fossil fuels.
The Kansas Senate race has narrowed rapidly, moving from Solid R to Lean R in our forecast since July. Adam Hamilton (D) now leads by 0.1 points in our polling average.The shift comes as the Senate GOP’s top super PAC moved nearly eight figures into Kansas from North Carolina.
They talk about affordability, but they are the ones supporting the green new scam,
Vance told the Topeka crowd, adding that the closure of West Coast refineries left the nation more reliant than ever on tinpot dictators in the Middle East.
The economic stakes for Kansas families and businesses are immediate. Before the United States attacked Iran in February, diesel cost about $3.62 per gallon, but climbed to $6.53 per gallon by September. That escalation forced Kansas farmers to spend an extra $83 million during the spring planting season.
Clashing Explanations for Surging Diesel and Gas
According to Sen. Roger Marshall, the primary drivers behind expensive diesel are the 2022 Russian invasion and Ukraine’s subsequent defense, combined with Democratic support for climate-focused energy policy overhauls. Marshall pointed to a long-term decline in domestic refining infrastructure, noting that the United States has not had a new refinery built since 1978 and has lost 90 refineries since 1990.

The real problem with the cost of diesel in particular is, No. 1, the Ukraine war,
Marshall said, predicting that ending the Ukraine-Russia war would promptly lower prices unless Democrats gain control of the U.S. House and Senate.
His Democratic challenger, Adam Hamilton, strongly disputed that narrative. Hamilton, who founded the largest United Methodist congregation in the United States and campaigned in Lawrence on October 12, 2026, blamed President Donald Trump’s war with Iran for the record fuel costs. Hamilton also voiced disapproval regarding the president’s choice to lift economic penalties on Russia to permit diesel imports into America.
This happened in response to the war in Iran that didn’t need to happen,
Hamilton said. It’s an unnecessary war. This is why the prices went to record highs, and Roger Marshall supported that.
Gubernatorial Race Shifts as Affordability Dominates
These energy market pressures and geopolitical conflicts have directly shaped the race for Kansas governor. Republican Ty Masterson endorsed the U.S. attack on Iran during a forum in Baxter Springs, framing fuel pricing as part of the affordability conversation along with property taxes, insurance, housing, and grocery costs.
The big problem with diesel prices is not Iran,
Masterson said, reiterating that legacy policy and a bottleneck in refinement have created severe refinement bottlenecks. I’m gonna be the most pro-oil-and-gas governor we’ve seen.
Meanwhile, Democratic nominee for governor Cindy Holscher countered that Kansas families are paying $4,700 more on fuel and essentials driven by the Trump administration’s imposition of tariffs and the war with Iran.
Ty Masterson has championed the war in Iran that sent diesel prices skyrocketing, and now he is lying to rural Kansans about why they are paying so much at the pump,
Holscher said.
The political friction coincides with a change in the gubernatorial race. The nonpartisan Cook Political Report changed its prediction for the Kansas governor’s contest from lean Republican to a toss-up following a Holscher campaign poll indicating a deadlocked 47% to 47% race, alongside an infusion of about $1.5 million in new data center industry contributions to Masterson’s campaign.