Single-stage election procedures for large electorates

The Condorcet efficiency of single-stage election procedures is considered under the assumption of impartial culture for large electorates. The most efficient ranked voting rule is either Borda rule or a truncated scoring rule. A decision rule is established to determine the number of candidates, k, that individuals should be required to vote for, whether or not ranking should be required, and the scoring rule that should be used if ranking is required. This decision depends upon the number of candidates available and the probabilities that individuals will vote if they must rank k candidates or simply report k candidates.