At an election office in Flagstaff, Arizona, voters will encounter bulletproof glass and need to press a buzzer to enter.
Election officials around the country said they were coordinating more closely with local law enforcement to respond quickly to disturbances.
The Justice Department says it has investigated more than 1,000 messages to election workers since the 2020 election, including more than 100 that could warrant prosecution.
PROTECTIVE MEASURESMany election officials blame disinformation, such as Trump's baseless claims about election fraud in the 2020 election, for the surge in threats.
In Michigan, Republican candidates for governor, attorney general and other positions have questioned the outcome of the 2020 election.