“The lessons learned are that people want to see you’re committed and they want to see you and they want to be able to talk to you and pinch you and ask you questions,” she said during an interview in a restaurant in Salem last weekend after a campaign meet-and-greet event.

She said she was receiving a noticeably friendlier reception this time. Voters, she said, are telling her that “you got back up on your feet, you worked hard for us, you’ve earned this, and we’re going to help you this time.”

In addition to the stop at Fenway, her new strategy includes knocking on doors. (“Talk about a one-on-one experience!” she said.) She is also talking at public events about her brother, who committed suicide in 1996 at age 33.

“I just feel it’s important for people to know who I am, where I come from, what my experience has been and also to relate that to what it means to be a good governor,” she said. “I’ve been through this. I know how tough it is.”

Voters at the Salem event said they liked her, but a few expressed reservations about her campaign. Tom Buonaugurio, a retired teacher, said he supported her but wanted her to show a little more verve in the manner of Senator Elizabeth Warren, a Democrat who defeated Mr. Brown in 2012.

“I know people think women should have some decorum, but Martha needs to be more like Warren, who didn’t let Brown get away with anything,” he said.