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Dudum v. Arntz

On February 4, 2010, a group of voters in San Francisco filed a lawsuit in Federal court claiming that one aspect of the city's use of IRV is unconstitutional. The suit argued that limiting the number of candidates the voter is able to rank (so called "restricted IRV") violates constitutional rights. The lead plaintiff was Ron Dudum, who has run for the Board of Supervisors several times, most recently in 2008.

On April 16, 2010, District Court Judge Richard Seeborg denied the motion for a preliminary injunction, ruling that "restricted IRV" is constitutional.

On November 8, 2010, the plaintiffs appealed the District Court decision to the Ninth Circuit.

On March 15, 2011, the case was argued and submitted.

On May 20, 2011, an opinion was filed.

Circuit Court documents

District Court documents

Press coverage

Background Material