Women’s rights activist Sandra Fluke has taken another step toward running for Congress in California.

Fluke, who has made headlines through her advocacy for contraception coverage, has filed paperwork seeking the Democratic endorsement for the seat being left open by retiring Rep. Harry Waxman, the Washington Post reports. Fluke had previous said she is “strongly considering” a run, but filing for the endorsement is the first concrete step in that direction. She has yet to officially announce her campaign or file paperwork with the Federal Election Commission.

The 32-year-old burst onto the national scene in 2012 when her testimony in favor of health insurance coverage for contraception was seized upon by conservative radio host Rush Limbaugh, who called her a “slut” and a “prostitute.” He later apologized.

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