(2) Delegates to the national convention of a party shall be selected in the manner provided by party rules, which shall provide all electors registered as members of the party equal opportunity to participate in the selection of delegates.
(3) Delegates to the national convention of the party shall be selected so that the number of delegates who favor a certain candidate shall represent the proportion of votes received by the candidate in relation to the other candidates of that party at the presidential preference primary election. Each person selected as a delegate shall sign a pledge that the person will continue to support at the national convention the candidate for President of the United States the person is selected as favoring until:
(a) The candidate is nominated at the convention;
(b) The candidate receives less than 35 percent of the votes for nomination at the convention;
(c) The candidate releases the delegate from the pledge; or
(d) Two convention nominating ballots have been taken. [1975 c.779 §15; 1979 c.190 §88; 1979 c.748 §1; 1987 c.267 §15; 1993 c.797 §28]