§ 4. A primary election held for the office of governor, a legislative office, a county office, the United States Senate, or the United States House of Representative shall be open to all candidates and all qualified voters without regard to the candidates' or voters' party registration or affiliation, or lack thereof.
In a primary election covered by this section, each candidate must be listed on a single primary ballot regardless of the candidate's political party. A voter may vote for any primary candidate regardless of the voter's party affiliation or lack thereof. The two candidates receiving the highest number of votes cast in a primary election advance to the general election. If more than one candidate is to be elected to an office at the general election, the number of candidates advancing from the primary election is twice the number to be elected in the general election.
The general election ballot may only include those candidates advancing from the primary election. The legislature may, by law, establish procedures for replacing a candidate who advanced from the primary election but will not participate in the general election due to death, withdrawal from the race, or disqualification.
A candidate may select the name of a political party to be listed next to the candidate's name on the primary ballot. The same political party designation shall appear next to the candidate's name on the general election ballot if the candidate advances to the general election.
Both the primary and general election ballots must state that a candidate's indicated political party designation does not constitute or imply an endorsement of the candidate by the political party designated.
The legislature may establish any necessary procedures to implement this section.
If any provision of this section or the application thereof to any person or circumstance is held invalid, such invalidity will not affect any other provision or application of the section that can be given effect without the invalid provisions or applications, and to this end the provisions of this section are severable.