A mostly smooth Election Day nationwide was marred in multiple battleground states Tuesday by a series of bomb threats and baseless claims of wrongdoing by former President Donald Trump. The bomb threats in parts of Arizona,

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

Voting in multiple battleground states was disrupted on Tuesday as numerous polling places received death threats, many of which the FBI said it determined had ties to Russia, prolonging polling place hours and raising the specter of election interference.