I'd much prefer an educated electorate voting, this ensures that they can't be swayed by a charismatic church official.
In almost every election, we must all overlook some things about the candidate we are voting for, this is not "the lesser of two evils," it is merely due to the fact that there will never be a candidate whose views are identical to our own. And in voting for an incumbent, the very nature of politics will have driven every elected official to support positions we disagree with.
That being said, I would prefer a person not vote than ignorantly vote for a "party slate" predetermined by his minister, congregation or any other group, regardless of which party they support.