Visit your county elections department and fill out a new voter registration form. Signing your ballot envelope confirms two things: 1.You are the voter for whom the ballot was issued. 2. Read the ballot declaration and voter registration oath. A ballot is counted if the provided ballot declaration signature matches the signature(s) in the voter's registration record. In each election, we compare the signature on your return envelope to the signature on your voter registration record. If you answered yes, you should update your signature on your voter registration. How can I update my signature? Citizens may register to vote in Washington State on a paper registration form, online at. I have a document needing notarized signatures from two people in different locations.