[4]: 937–938 FSP advocated for class solidarity of Black and white workers, called for a greatly expanded understanding of and attention to women's emancipation, and urged the anti-war movement to support the socialist, anti-colonial aims of the Vietnamese Revolution.

FSP became a pole of attraction for Seattle leftists opposed to the SWP's internal politics and established a home at Freeway Hall.

[9][4]: 936–938 In 1989, FSP founded the United Front Against Fascism (UFAF), an anti-fascist organization that included a broad coalition of the Left, the LGBT community, labor unionists, feminists, people of color, Jews, and civil libertarians.

[9] In 2003, Lyndon LaRouche filed a complaint with the Federal Election Commission that FSP's Red Letter Press and its managing editor, Helen Gilbert, had violated campaign finance laws.

[1][18] FSP leaders Clara Fraser and Gloria Martin hoped to build a Leninist party that is "socialist-feminist" in ideology and practice.

[27] In 2024, FSP declined to make a presidential endorsement and instead suggested voters spoil their ballots by writing-in "free Palestine.