In two counties in the Pacific Northwest, local officials are blaming the Postal Service for issues with mail ballots getting to voters ahead of the hotly contested elections on Tuesday.

In Coos County, Oregon, and Whitman County, Washington, residents have reported not receiving mail-in ballots, with Coos County Clerk Julie Brecke telling the Associated Press in a statement that she has been inundated with calls about voters not getting their ballots and blamed an “error” by the Postal Service.