For private interpretation of Scripture to be the ultimate rule of faith, the Church has to be dismissed, or at least reduced to a powerless society.
It's no accident that following the Protestant Revolution, the process of religious disintegration passed through the rejection of church hierarchy, self-interpretation of Scripture and finally, Unitarianism.
This is why most Protestant religion threads here are attacks on the Church rather than a presentation of Protestant teaching. It's been more than 500 years of protest.
Frankly, I wonder how many times my dear, dead Irish grandmother voted.
I suspect it was more than once!