Condorcet method
A Condorcet method is a voting system that will always elect the Condorcet winner (if there is one); this is the candidate whom more voters prefer to each other candidate, when compared to them one at a time. This candidate can be found by checking if there is a candidate who beats all other candidates; this can be done by using Copeland's method and then checking if the Copeland winner has the highest possible Copeland score.