It is a true statement that the fact that presidential candidates are now chosen by voters in primary elections has enhanced the authority of the president who is ultimately elected.
The shift towards presidential candidates being chosen by voters in primary elections has indeed enhanced the authority of the president who is ultimately elected. This process represents a more direct and democratic approach to selecting presidential candidates because it allows voters from various political parties to have a say in who represents them in the general election.
It has increased transparency and inclusivity in the candidate selection process and thus fostering a stronger sense of legitimacy for the elected president.
Also, candidates who emerge from competitive primaries often have a broader base of support and a stronger mandate which can translate into greater authority and effectiveness in office.