An already heated presidential race faced further strain from a string of reported bomb threats in battleground states—causing some delays on Election Day. The FBI said in a statement it was aware of the threats, many of which originated from Russian email domains, but the agency also downplayed their risk. “None of the threats have been determined to be credible thus far,” the statement said. [time-brightcove not-tgx=”true”] In Pennsylvania, a polling place in West Chester was evacuated because of a threat, according to Josh Maxwell, chair of the Chester County Board of Elections.