Benham, a Condorcet method, compared to Instant Runoff, has for 3 candidates strictly fewer opportunities for tactical voting
Summary: Opportunities for tactical voting using ranked-choice ballots are examined for three-candidate elections under Instant Runoff, and under the Condorcet runoff method known as Benham. The Benham method is shown to have strictly fewer opportunities for unilateral tactical voting, as follows. If an election offers an opportunity under Benham, then it also offers an opportunity under Instant Runoff; but the converse is not true: there are elections that offer an opportunity under Instant Runoff that do not under Benham.
