OR HB3166

Creates a unified "open primary" system where all candidates for partisan offices appear on the same ballot regardless of party affiliation, with the top five vote-getters advancing to the general election (candidates must receive at least 0.5% of votes cast to qualify)

Establishes "voter choice offices" covering U.S. Senator, Representative in Congress, Governor, Secretary of State, State Treasurer, Attorney General, and state legislators, exempting only candidates for President and Vice President

Requires general elections for voter choice offices to use ranked choice voting or similar method with automatic runoff calculations, effective for elections after January 1, 2028

Moves the primary election date from the third Tuesday in May to the first Tuesday in August, while maintaining a separate presidential primary on the second Tuesday in March

Eliminates precinct committeeperson positions and removes party affiliation requirements for candidates, instead allowing candidates to list up to three political party endorsements on the ballot