Polling places in Democratic-leaning areas of five swing states received bomb threats that officials said likely came from Russia.

WASHINGTON – Bomb threats wreaked havoc at dozens of polling sites across at least five pivotal swing states on Tuesday. Voting precincts in Georgia, Michigan, Wisconsin, Pennsylvania and Arizona were targeted with emailed threats, which the FBI said ...

An already heated presidential race faced further strain from a string of reported bomb threats in battleground states—causing some delays on Election Day.