A man believed to be in his 70s was struck and killed on Front Street in Weymouth Friday afternoon, according to the Norfolk district attorney’s office.

At the time of the crash, the unidentified man was campaigning for secretary of state candidate Josh Zakim, Zakim said Friday evening.

“The Zakim campaign family is absolutely devastated by the sudden loss of a friend and campaign volunteer while he was out with other volunteers today in Weymouth,” he said in a statement.

Zakim, a Boston city councilor, is challenging fellow Democrat and longtime incumbent William Galvin in Tuesday’s primary election.

The pedestrian was hit by a Buick Enclave SUV in the area of the Front Street interchange with Route 3 and pronounced dead at the scene, said David Traub, a spokesman for the district attorney’s office.


The driver stayed at the scene and spoke to police, he said.

In his statement, Zakim said, “I have spoken with his wife and offered my condolences and the prayers and assistance of our entire team. Those who were there have offered statements to police and we will be offering them any needed support. We have canceled all campaign activities for tonight.”

Danny McDonald can be reached at daniel.mcdonald@globe.com. Follow him on Twitter @Danny__McDonald.