If Sauron and Voldemort were in a fight, who would be victorious?
My Opinion: Sauron would slay Voldemort because he is a more powerful being. Voldemort's spells probably wouldn't work on Sauron because he's immortal. Besides, Sauron has the One Ring which, as seen in the FotR prologue, gives him supernatural strength so that he can send dozens of soldiers flying with a swing of his mace. Also, in the Hobbit as well as LotR, he is very good at controlling fire and using dark sorcery. Even though Voldemort can use cool spells, he is no match for the Dark Lord Sauron.