To change your voter registration online, visit the online voter registration website for your state, and supply the required information per the instructions on the website. Depending on the state that you live in, online voter registration services are potentially located on the state government's website or on the website of your secretary of state or the department of elections, as of 2015.
Louisiana, for instance, features online voter registration on the website of its secretary of state. The same online application is valid for new registrations or for altering existing registration status. You must have a valid Louisiana special identification or driver's license to complete either process, and the Louisiana Department of Motor Vehicles verifies each electronically submitted application.
In some states, such as Texas, the only online changes you can make to your voter registration are your name and address. The Web page to do so is on the website of the secretary of state. To complete the service, you must be a registered voter in Texas and have a current Texas driver's license or identification card, your Social security number and the voter unique identifier number from your voter registration card.
You can update your address only if it is within the same county as the old address. In other states, such as Oregon, you can automatically change your voter registration address online via the Department of Motor Vehicles.