The Daily Planetreports that IRV can help ensure a true majority in a 3-way race for mayor, which Telluride often has.  IRV allows voters to rank candidates; that way, if no one receives a majority, the candidate with the fewest votes is tossed out, and those votes are redistributed according to ranking.  This was a citizen-initiated ordinance in which town council voted 6-1.  It’s reported that instant runoff voting is used in cities like San Francisco, Sarasota, Florida, and even in Aspen.