When they stand on the pulpit and advocate?
Only ones I've ever heard of doing that were liberal black ministers in liberal black churches. But even so, I don't buy all this nonsense about pastors not being able to support political leaders - even from the pulpit. That's no different from stumping from a soap box on Main Street, as long as the church members are cool with it. If anything is the church-state violation, it's the federal government getting in and telling pastors what they can and can't do to retain their tax exempt status. Of course, taxation of churches would be a church-state separation violation, too....