Which type of primary allows voters to decide the percentage of delegates awarded based on their vote share?

The type of primary that allows voters to decide the percentage of delegates awarded based on their vote share is known as a proportional primary. In this system, delegates are allocated to candidates in proportion to the number of votes they receive. For example, if a candidate receives 30% of the votes, they would be awarded approximately 30% of the delegates. This method contrasts with winner-takes-all systems, where the candidate receiving the most votes gets all the delegates.

Proportional representation aims to reflect the preferences of all voters more fairly, fostering broader representation within a party. This approach is particularly significant in contests where multiple candidates are vying for the nomination, as it encourages participation from various factions within a party.