The Eleventh Circuit held oral argument in Wilding v Democratic National Committee Services Corp., 17-14194, on December 11, 2018. There is still no decision. It is somewhat unusual for courts to take this much time to issue an opinion, after the oral argument, at least in election law cases.
Wilding v DNC is the case filed by individuals who had contributed to the national Democratic Party in 2015 and 2016, and who supported Bernie Sanders for the 2016 nomination. They sued because they felt the Democratic National Committee had tilted the 2016 nomination contest against Sanders and for Hillary Clinton. The U.S. District Court had ruled against the Sanders supporters.