Zip codes are optional. If the signer is a resident of a second or third class municipality, a post office box number may be used in lieu of a street address. Second and third class municipalities are those with less than 5000 population. Each signature line must show the month, day and year it was signed. Numbers to designate the month are permissible.
Abbreviations commonly used are also acceptable.
The county of the signer's voter registration must be included. The date, address, county of registration, and printed name may be added by the circulator prior to the petition being filed. Ditto marks may not be used. If photocopies are made of the originally signed petition sheet for circulation, the original petition sheet must be submitted with the photocopied sheets. Petitions for legislative, judicial, water development district, state and federal offices are filed with the Secretary of State.