“potentially losing their voice in the Electoral College in the process.”
That is the intent of the challenges in all three of the states Stein is contesting. As a Pub US Rep from Wisconsin said last night, only one county (Dane which contains Madison) is doing a hand recount and the Dems in charge there are challenging every ballot they can in the hope that they can drag it out past the cutoff date of December 13 so that the Wisconsin results can not be used in the electoral college vote on the 19th.