Why might a candidate use the plain folks approach ?

To appeal to the largest amount of people

Explanation:

By making themselves seem like just another person and not superior or above anyone in any way they appeal to a larger group of people thus securing more votes.

hawaii was the final state

the catholic church withhold people's access to the bible during the middle ages.

people could go to church and listen to the teachings, but it was absolutely forbidden to own and/or read the books of both the old and new testaments. it was also prohibited to translate the books (which where originally in biblical hebrew) to any other language.

this was done so the church could remain in control of what their teachings were and to enhance their importance and power, while also being able to judge people's actions through information that was unavailable for the general public.