The voters of Benton County, Oregon, will vote next month on whether to amend the county charter and provide for instant runoff elections for county office. Benton County has partisan elections for Sheriff and County Commissioner. The proposal would have no effect on partisan primaries for those offices, but would only apply to the general election. Here is a youtube ad in favor of the measure, which got on the ballot through the initiative process. Thanks to Blair Bobier for the link.