To the extent that Green Party presidential candidate Jill Stein is known at all, it’s mainly for her ambiguous semi-embrace of the anti-vaccine movement, her Harambe tweet (and her subsequent criticism of how the media covered it), and her video confrontation with my WGBH News colleague Adam Reilly at the Democratic National Convention.

But long before Stein began her quadrennial, quixotic campaigns for president, she was a quixotic candidate for governor of Massachusetts. And I was there.

In April 2002, I was working on a story for CommonWealth Magazine about how much attention the media should give to that year’s third-party candidates for governor: Stein, a Lexington physician making her first run, and Carla Howell, whose respectable showing in her campaign for the US Senate two years earlier had given the Libertarians “major party” status under Massachusetts law.

In 2000, while I was on staff at the Boston Phoenix, I had spent a pleasant day on the campaign trail with Howell as she barnstormed through Western Massachusetts. In 2002, though, she refused to speak with me, even running away at a campaign rally outside the Park Street MBTA station. Her complaint was that I shouldn’t be lumping her with a newcomer like Stein.

By contrast, I found Stein to be charming—warm, sincere, intelligent, and, though far to the left, no more so than any number of state legislators. What she couldn’t explain (at least not to my satisfaction) was why she wouldn’t work within the Democratic Party, where she might have had some hope of success. That’s the calculation that the independent socialist Bernie Sanders eventually made. Stein has remained the perpetual outsider; to this day, the only elected governmental office she lists on her website is her stint as a member of Lexington’s town meeting.

I recently found my notes from my interview with Stein. I found nothing earth-shattering. But I thought anyone who is intrigued by her candidacy might be interested in what kind of a politician she was back then.

Our day began with her giving an Earth Day talk to about 60 people at Simmons College that she had titled “The Hijacking of Environmental Health Care in America: A Doctor’s Call for Reclaiming Our Democracy.” Her address, complete with PowerPoint, touched on subjects such as the skyrocketing rate of asthma, the effects of environmental dioxins on breast milk, and the benefits of wind power.

Looking back, some of her remarks seem strikingly similar to her current talking points. For instance, she told the audience about her efforts to lobby government officials as an activist with organizations such as Physicians for Social Responsibility only to discover that those officials were in thrall to special interests. “The system ties their hands,” she said. “In order to get into office you’ve got to cut the backroom deals.”

More shades of Stein’s 2016 rhetoric: At one point a member of the audience told her, “Ralph Nader gave us the gift of George Bush,” and asked why she wasn’t running instead for a seat in the legislature. Her response: “It’s not as though we’re looking at markedly different agendas between the two parties.”

After her talk, I interviewed Stein in the Simmons cafeteria and asked her what she saw as the media’s responsibility to cover her campaign.

“It would be absurd to think of the media as a gatekeeper,” she told me. “The media is people, and responsible and thinking people. They ought to be able to use their judgment to engage the democratic process, and that means to open up dialogue to candidates that they think are serious.” She added that she’d had a “very good experience” with the media in her work as an activist, saying, “I’ve had great relationships with a lot of press.”

Stein also favored reforms to give non-major-party candidates a chance to have more of an impact. We discussed the instant runoff, which she still supports. The way it works is that a voter can designate her first, second, and third (or more) choices—allowing her to pick, say, the most left-wing candidate first and then a mainstream liberal second.

“It’s very hard to get beyond the two-party system, because any challenger stands to split the progressive party and bounce the election to the third-favored candidate,” Stein said. The instant runoff, she added, “would be an enormous breakthrough, and it could allow us to really open up the dialogue.”

It all sounded very reasonable, if unlikely to become a reality. But it was when I asked her why she chose a campaign for governor that was almost certain to end in defeat rather than continue her work as an activist that I got some insight into what would be driving her all these years later.

“I jumped because I felt there was no choice,” she said. “Personally I’m looking at the irreparable unraveling of the fabric of society and the globe and the planet. And I know too much to do anything but stand up and yell on the highest mountaintop that I can get on. So I didn’t have a choice. When the offer was made [by the Green Party], I could not in good conscience say no, come hell or high water.”

The Republican gubernatorial candidate, Mitt Romney, defeated Democrat Shannon O’Brien that fall, with three others trailing far behind: Stein, Howell, and an independent candidate, Barbara Johnson. Stein did considerably better than Howell or Johnson, and her 3.5 percent was good enough to establish the Greens (now the Green-Rainbow Party) as a major party in Massachusetts. Since then she has attracted a devoted following. But I don’t see how that translates into any actual effect on government policies.

The first presidential debate of 2016 will be held on September 26. Stein won’t be on stage, and neither, we may assume, will the Libertarian candidate, Gary Johnson, since both are currently well short of the 15 percent margin in the polls that they need to earn an invitation.

If it were up to me, I’d let Stein and Johnson participate in the first debate and only then use polling to decide whether they should be allowed into subsequent debates. That’s not going to happen, though. Stein is still yelling from the mountaintop. But she’s no closer to breaking through than she was 14 years ago.