On September 13, U.S. District Court Judge Joel Slomsky heard arguments in Little v Vasquez, the case filed by the Green and Republican Party nominees for State House in the special election in the 197th district in February 2017. See this story, describing the hearing. This is the special election in Philadelphia in which the only candidate on the ballot was the Republican, Lucinda Little. The Green Party nominee, Cheri Honkala, and the Democratic nominee were both write-in candidates. The Democrat won, but the other two candidates then filed this lawsuit in April, alleging that the election should be overturned because so many illegal acts occurred on election day. Polling place officials allegedly actively pushed voters to cast a write-in for the Democratic nominee.
UPDATE: see this story also. The judge will decide in six weeks whether the case can move to a trial.