US state governments are introducing heightened security measures to protect election-related facilities, including rooftop snipers, panic buttons at polling stations and drone surveillance. The Washington Post writes about it.
So, in Nevada and Washington, the National Guard was used in case of riots. Arizona's secretary of state, who will certify statewide voting results, has announced plans to wear a bulletproof vest in case of an attack. Some Arizona counties have also implemented drone surveillance and social media monitoring for reports of threats. Maricopa County in the same state has suspended applications for emergency leave and plans to deploy snipers on rooftops if needed.
Some election commissions have given local police the phone numbers of each polling station, so law enforcement officers can call after receiving reports of a potential threat before sending in the police and disrupting the vote.
As the Washington Post notes, the authorities want to "give Americans confidence in the security of voting after the disturbances in the previous elections." In 2020, Donald Trump, who is participating in the race again this year, refused to admit defeat, claiming that the results of the vote were falsified.