It will all ultimately drive to the United States Supreme Court which will be the only civilian court that ultimately counts.
Also bear in mind that Trump has numerous Executive Orders and emergency powers that could, worst case, allow him to declare martial law, arrest as enemy combatants those domestically who committed voter fraud with the help of foreign nations, confiscate their assets, and send them to Guantanamo Bay for swift military tribunals followed by prosecution, conviction, and execution.
Foreign national interference in domestic elections amounts to an act of war, and knowing domestic cooperation with such entities constitutes treason, a capital offense.
Senator Graham and Justice Kavanaugh Exchange on Domestic Enemy Combatants
German City Is CIA Remote Hacking Base: 28 States Sent Election Results There
(Edited by Luke Setzer on 11/22, 10:16am)