Oregon has two initiative petitions circulating, both of which would establish a top-two primary. Mark Frohnmayer is sponsoring petition #54, which would establish a top-two system and also use approval voting in the primary. James Kelly, a well-connected businessman, is sponsoring petition #55, which sets up a top-two system but does not use approval voting at any stage.
All initiatives in Oregon this year need 87,213 valid signatures, by July 3.