Arizona's Maricopa County has ramped up security after protests in 2020 and violent threats toward election officials, including Ken Matta. He explains the new reality for election security in Arizona’s largest jurisdiction.

A security fence rings a Las Vegas building where Nevada tabulates votes. An Arizona sheriff has his department on high alert to guard against potential violence with drones and snipers on standby. Governors of at least three states have called for National Guard troops to help maintain the peace.

Crews at Howard University and throughout the city put up security fences and boarded up windows ahead of Election Day.

Anxiety over threats of political violence is running high heading into today’s election in the US, with authorities across the country taking unprecedented measures to protect both election workers and the ballots themselves.