Editing Two-round system (section)

=== Contingent vote ===
{{main|Contingent vote}}

The ''contingent'' or ''supplementary'' vote is a variant of instant-runoff voting that has been used in [[Queensland]] and was previously used in the [[United Kingdom]] to elect some mayors; it was ultimately abandoned as a result of its complex [[election administration]]{{According_to_whom|date=July 2024}}. Under the contingent vote, voters rank the top-two candidates. However it involves only two rounds of counting and uses the same rule for eliminating candidates as the two-round system. After the first round all but the two candidates with most votes are eliminated. Therefore, one candidate always achieves an absolute majority in the second round. Because of these similarities, the contingent vote tends to elect the same winner as the two-round system and instant-runoff voting.