President Donald Trump promised voters angry about inflation that he would slash gas prices below $2 a gallon within his first year in office.

"My plan will cut energy prices in half or more than that within 12 months of taking office," Trump said in a speech to the New York Economic Club in September 2024 during his re-election campaign.

"Energy was what caused our problem initially," he told voters. "Energy is going to bring us back. That means we're going down and getting gasoline below $2 a gallon."

But when voters head to the ballot box on Tuesday energy prices will remain a headache. Gas and diesel prices are forecast to be the highest ever on an election day, according to Patrick De Haan, head of petroleum analysis at GasBuddy.

"Prices have never been this high this late in the year," De Haan said.

Gas prices stood at a national average of $4.20 a gallon on Friday, nearly 40% above the same period last year.…