I would say if you are going to preach to others, then you have to be perfect. Since no one is, they should stop preaching. Its not govts job or a politicians place to tell others how to behave. They need to shut up, and do their job. Beyond that, unless a family member makes political comments, they are off limits. ANd unless a politician uses their private life to get elected, its off limits.

__________________
"To take from one, because it is thought his own industry and that of his father has acquired too much, in order to spare to others who (or whose fathers) have not exercised equal industry and skill, is to violate arbitrarily the first principle of association, "to guarantee to everyone a free exercise of his industry and the fruits acquired by it."

-Thomas Jefferson