Unlike constitutional monarchs, absolute monarchs believed they had authority

Absolute monarchs believed that they had absolute authority over all people. They basically believed that their rule was their divine right and sometime they were even praised as gods, example being the pharaohs of Egypt. They didn't care about any rights or laws because they were the law and their word was final about everything.

There can be more freedom for them

This would be an open primary. a closed primary people can vote only prior to election day if the party if they are registered. independent voters can not participate. there is not a wide-open primary, but there is a semi-open primary.