Negro men and women could not vote, which would allow white people to vote for whoever will keep things the same and not allow change. Segregation would be very upsetting, think about not being able to use the nice bathrooms at your home, instead you use an outhouse. Negros were not allowed to be as educated so they could not gain power. knowledge is power.
Answer: Party loyalists are likely to vote for all of their party's candidates in any election.
If the head of the department is elected by the governor then first, the governor will have an influence over who the head of the department is, and second, it will mean that this person will have to seek approval of the governor - this will support cooperation.
On the other hand, being elected in their own right will support independence.
Where is the question? :)