Gasoline shortages rippling across the East Coast are driving up pump prices from New York to Maine, potentially frustrating the Biden administration’s effort to rein in energy costs ahead of the election.

The price of diesel may be showing signs of leveling off after falling again for the ninth consecutive week, but by just two-tenths of a cent, thanks to noticeable regional disparities.

The U.S. average retail price of diesel dropped 2.9 cents to $3.048 a gallon, the U.S. Energy Information Administration reported, as crude oil prices hovered around $45 per barrel.

The U.S. average retail price of diesel fuel fell 1.9 cents to $3.266 a gallon, following a .3 cent decline a week ago, according to the weekly report from the U.S. Department of Energy’s Energy Information Administration on June 11. Despite the drop, diesel now costs 74.2 cents more per gallon than it did one year ago.

The U.S. average retail price of diesel dipped 0.3 cent to $3.025 as the cost of crude slipped and remained just below $64 a barrel.