Diesel prices could crush Republicans in the heartland

Nate Silver argues that a surge in diesel prices, on top of rising regular gas costs, helps explain unusually strong Democratic performance in Midwestern and agricultural Senate contests. He notes recent polls showing Democrats competitive or leading in Iowa, Kansas, Nebraska and other heartland states, and ties that regional underperformance by Republicans to higher local fuel inflation. Gas prices have jumped steeply in states like Michigan (about a 55% year-over-year rise) and Wisconsin (53%); diesel has risen even more nationally (about a 77% increase from $3.69 to $6.53 per gallon). Because diesel powers trucks, farm equipment and heating oil, its spike hits rural and cold states harder than coastal areas, translating into heavier economic pain for voters in key battlegrounds.

Silver backs the claim with EIA-based estimates of diesel’s share of combined fuel consumption, which ranges from roughly 17% in Delaware to 70% in Alaska and skews high in farming, oil-producing and cold-weather states. Adjusting state-level inflation to include diesel raises the effective price shock substantially - examples include Iowa ~62% combined vs. 48% for gasoline alone, Nebraska 63%, Michigan 62% - and these larger shocks overlap with many competitive Senate races. He concedes attribution isn’t perfect (fueling location vs. miles driven), but contends the pattern and charts strongly link diesel-driven inflation to Republican weakness in the heartland.