Maricopa County, Arizona, which Biden won by a slim margin, has consistently been the subject of election denialism conspiracy theories. The other five — Michigan’s Wayne County, Pennsylvania’s Philadelphia County and Georgia’s Dekalb, Fulton and Gwinnett counties — were some of the largest Democratic strongholds in their respective states.

Hoax bomb threats, many of which appeared to originate from Russian email domains, were directed on Tuesday at polling locations in five battleground states - Georgia, Michigan, Arizona, Wisconsin and Pennsylvania - as Election Day voting was underway,

Officials in Fulton County, Ga., said they received "multiple calls" and the threats forced a brief closure of two polling places.