And the FBI warned that faked video clips were circulating on the internet telling Americans to “vote remotely” because of a terrorist threat.

In Fulton County, Ga., officials said they received multiple bomb threats, including two incidents that forced officials to briefly close polling locations.

Separately reported bomb-threat incidents in Michigan also were determined to be unfounded. The threats were reported throughout the day at polling locations in three metro Atlanta counties, all with large numbers of Democratic voters, and into the evening ...