(a) "Political sign" means any sign for the purpose of endorsement, support, advocacy or opposition to a candidate or candidates for political office, or cause and/or issue, at any general, primary or special election, on all levels of government.
(b) Such political signs may be erected in any use district and shall be displayed only during the period of sixty days prior to and ten days subsequent to any special, primary or general election.
(c) No more than two signs may be erected on any property, dwelling unit, store or office as window signs within an occupied building not to exceed six (6) square feet per sign.