The District of Columbia has four ballot-qualified parties: Democratic, Republican, Green, and Libertarian. The name of the Green Party in D.C. is Statehood Green.
At the 2022 primaries, no one filed to appear on the primary ballot of the Green and Libertarian Parties, but both parties nominated candidates in their own primaries via write-in votes. Write-in candidates in primaries have their write-ins counted if they file a declaration of write-in candidacy. There is no minimum number of write-ins needed.
For the districtwide offices, Greens nominated Natale Stracuzzi for Delegate to the U.S. House, Darryl! L. C. Moch for Chair of the City Council, David Schwartzman for City-Council-At-Large, and Joyce Robinson-Paul for “shadow” seat in the U.S. House.
Libertarians nominated Dennis Sobin for Mayor and Bruce Majors for Delegate to the U.S. House.
The Republican Party nominated a full slate of districtwide candidates (except for Attorney General), so it won’t be easy for the Libertarian Party to poll the needed 7,500 votes in the general election for one of the races. Turnout in D.C. general elections in midterm years is very low, because generally people know that Democrats always win, so it takes a higher percentage of the vote to reach 7,500 votes. The only time the Libertarian Party ever met the 7,500-vote threshold in a midterm year was 2018, when Libertarians exceeded it for Mayor, Chair of the City Council, and Attorney General, but in none of those three races was there a Republican running. The Greens in D.C. always meet the vote test, in presidential and midterm years alike.