Public employees should not be making statements in support of or opposition to any candidate for political office, political party, ideology or any other issue which may be a subjcect of debate among the electorate while in a work envirnoment. They have the same freedom as any other citizen in a non work environment but should leave their employer out of it.
If you were discussing sports, would your status as a government employee have any relevence to the fact the Redskins couldn't beat a second rate highschool team? Why would you bring it up? The same applies to politics and public policy. Your status as a government employee has no relevence to the discussion. Don't bring it up.