Any individual intending to decline a nomination shall do so by filing written notice of that intention with the officer with whom the certificate nominating the individual is filed. If the written    notice is filed with the appropriate officer within forty-eight hours after four p.m. on the sixty- fourth day before the election, the nomination is void. If written notice is mailed, it must be in the physical possession of the appropriate officer within forty-eight hours after four p.m. on the sixty- fourth day before the election.