Eleanor Holmes Norton

Eleanor Holmes Norton has represented the District of Columbia in Congress for 18 terms.

Now she's ready to call it a career.

The Democrats filed paperwork to end her reelection campaign.

The 88-year-old, who's been the district's only representative in Congress since 1991, has been an institution in Washington politics for decades.

And while she didn't have a vote, Norton had the ear of many in her party.

She's one of the oldest members of the House and a veteran of the civil rights movement, helping to organize the 1963 March on Washington.

Mayor Muriel Bowser congratulated Norton on her retirement, calling her D.C.

's warrior on the Hill.

Daria Albinger, Fox News.