Delaware elected the nation’s first transgender state senator on Tuesday.

Activist Sarah McBride, a Democrat, claimed swift victory in her race for the 1st District Delaware state Senate seat, according to the New York Times and the LGBTQ Victory Fund.

The win makes McBride, 30, the highest-ranking elected openly trans lawmaker in the US.

McBride, who interned at the White House during the Obama administration, made history at the 2016 Democratic National Convention by becoming the first trans person to speak at a major party convention.

She’s currently national press secretary for the LGBTQ civil rights organization Human Rights Campaign.

“We’re so proud of you for this historic win,” the organization tweeted.

McBride joins a handful of other trans legislators around the country but would be the first transgender state senator.