I'm debating this... I have not seen any law saying i cannot..
If its used for fed or state business then it may be a felony in the state of Ohio. Im not sure, it could be a very fine line.I vote at a church. They are not posted. Ohio, is not like some states that ban carry in church. If the church wants to post, then they can.
Either way, I always refer to my "RULE #1".
RULE #1 - Do I see a metal detector at the door? ;-)