Romney isn't satan!
He just works for him...
In any case, this preacher can say anything he likes.
Everyone quit hyperventilating & think about this for a minute. The preacher was just lazy! He could have said “any church that teaches xxx is promoting Satan’s agenda so voting for a member of that church is voting for Satan”. No problem & no IRS violation. ANY preacher should know you can’t use the pulpit to direct votes for a particular candidate by name.
Indeed he can, but he'd be wise to also remember this part of the Constitution (From Art. VI).
The Senators and Representatives before mentioned, and the Members of the several State Legislatures, and all executive and judicial Officers, both of the United States and of the several States, shall be bound by Oath or Affirmation, to support this Constitution; but no religious Test shall ever be required as a Qualification to any Office or public Trust under the United States.