The U.S primary system gives eligible voters the chance to vote for candidates who will then proceed to subsequent elections. One merit of the U.S primary system is that it is more consultative and thorough. Usually, a candidate goes through a series of voting processes that ensures that the right aspirant is brought on board. In comparison to a single voting system, a primary electoral process eliminates most of the likely chances of electoral malpractices like vote-rigging. It is likely for an aspiring candidate to undertake election malpractice at all the subsequent levels of the election.
Further, under the existing models, a voter can opt for a particular system to follow whenever there are primaries. This may not be merit at all because the voter develops some form of rigidity with time which may go contrary to the process of politics, which is highly dynamic. Moreover, an open primary system is capable of breeding a ‘raiding ground’ in the sense that voters can decide to cast their votes in other primaries for the party, thinking that a weaker candidate will be obtained to compete against a powerful aspirant in the final elections.
Although the U.S primary system has some limitations, the merits of this electoral system are numerous because this is the system that has been used for several decades with profound success in electing political leaders. Hence, the flaws within the primary system are negligible and cannot outweigh the advantages.