Massachusetts physician Jill Stein has apparently clinched the Green Party’s presidential nomination, winning the support of 204 of the 304 delegates who’ll be at the party’s convention next month in Baltimore, her campaign recently announced.

Stein, of Lexington, ran as the Massachusetts Green-Rainbow Party’s candidate for governor in 2002 (her opponents then included a guy named Mitt Romney) and again in 2010, when she won accolades for her strong debate performance.

Stein’s platform is based on a “Green New Deal” that would guarantee a living-wage job for all Americans who can and want to work. She also supports universal healthcare through a Medicare for All model, full public financing of candidates to counter the insidious influence of money in politics, an economy that favors environmentally sound and sustainable practices, and stronger labor laws.

The Greens have voted on their nominee at a series of state primaries and caucuses. A total of four people have competed for the nomination, although not all of their names have appeared in every state primary or caucus. That group includes the ’80s sitcom star Roseanne Barr, who follows Stein with the second highest number of delegates. After Stein secured the necessary number of votes in the California primary earlier this month, Barr announced that she would leave the Greens to start a “Green Tea Party.” More recently, though, Barr’s campaign announced that she will continue to fight for the Green nomination, USA Today reported.

Whoever its eventual candidate is, the Green Party still has to work to get her name on the ballot in many states. At last count, the Greens had secured a place on the ballot in 21 states, including Massachusetts, and in the District of Columbia, and were in the process of petitioning to get on in 17 more, including Vermont, Connecticut and New Hampshire. In other states, the petitioning process has not yet begun.