(1) A major political party may, under national or state party rules, base the allocation of delegates from this state to the national nominating convention of that party in whole or in part on the participation in precinct caucuses and conventions conducted under the rules of that party.
(2) If requested by a major political party, the secretary of state shall adopt rules under RCW
29A.04.620 to provide for any declaration required by that party.
(3) Voters who subscribe to a specific political party declaration under this section may only vote for a candidate of that party. Each list of candidates on ballots must be readily distinguishable from the list of candidates for any other party. Votes cast by persons making these declarations must be tabulated and reported separately from other votes cast at the primary and may be used by a major political party in its allocation of delegates under the rules of that party.
(4) For a political party that requires a specific voter declaration under this section, the secretary of state shall prescribe rules for providing, to the state and county committees of that political party, a copy of the declarations or a list of the voters who participated in the presidential nominating process of that party.