Electing someone is actually hiring for the job

Electing someone, for example a President, is actually hiring someone for the job. If someone is elected due to popularity instead of job competence then how do they expect a good job to be done? And the job of President is an important job, needing much skill at responsibly enabling safe thriving of all the American people and their lands, all of them. However, not many voters have the experience of being a hiring manager; nor do they have the job application resume in front of them in the voting booth.