The Libertarian Party is suing the Board of Elections over a provision in city law that bans non-District residents from circulating nominating petitions.

That ban, the party says, is hindering Libertarian presidential candidate Gary Johnson and D.C. delegate candidate Bruce Majors—both of whom are very, very likely to lose their elections if they do qualify for the ballot—from getting on the ballot for November. According to the lawsuit that was filed today, Johnson needs 4,667 signatures to get on the ballot, and Majors needs at least 3,000. Neither candidate has been able to meet that threshold, the lawsuit says. The Libertarians want to use “reliable professional circulators” to gather the signatures as “the pool of potential petition circulators available to the Libertarians is sharply reduced,” the party says in court records.

The suit also says that their professional out-of-state petition gatherers would be “the most effective at disseminating the Libertarians’ political views.”

By last count, the highest possible number of registered Libertarians in the District was 1,440.

The party has filed similar lawsuits challenging the constitutionality of prohibitions on who can be petition circulators in other states.

A spokesman for the Board of Elections says he’s unaware of the lawsuit.