That would be interesting to see. I wonder if the Obama DOJ would consider that an illegal action? Something along the lines of Bribery or threatening voter or some such nonsense.
On the other hand a simple notification on the bulletin board about the owner’s intentions vis a vis the election outcome might be sufficient. No threats just a statement of intent.
Never, ever put anything political in writing 'as the business.' Win/Lose you become a target of fascist liberalism.