Sign your name the way you normally sign your legal name, or on your driver's license or voter's registration. There is some latitude in how signatures can be signed. Make sure your printed name is legible and as complete as possible. The main thing to keep in mind is the Secretary of State Bureau of Elections needs to determine that the person signing is you, and that you are registered to vote at that address on the date that you sign the petition. If you sign or do not sign your middle name, that is okay. Variations in the way you spell your name (Don or Donald) are also acceptable.