Any change of address form submitted in accordance with State law for purposes of a State motor vehicle driver’s license shall serve as notification of change of address for voter registration with respect to elections for Federal office for the registrant involved unless the registrant states on the form that the change of address is not for voter registration purposes.
52 U.S. Code § 20504 - Simultaneous application for voter registration and application for motor vehicle driver’s license
(a) In general
Each State motor vehicle driver’s license application (including any renewal application) submitted to the appropriate State motor vehicle authority under State law shall serve as an application for voter registration with respect to elections for Federal office unless the applicant fails to sign the voter registration application.
(b) Limitation on use of information
(c) Forms and procedures
(2) The voter registration application portion of an application for a State motor vehicle driver’s license—
may not require any information that duplicates information required in the driver’s license portion of the form (other than a second signature or other information necessary under subparagraph (C));
(B) may require only the minimum amount of information necessary to—
(C) shall include a statement that—
states each eligibility requirement (including citizenship);
(D) shall include, in print that is identical to that used in the attestation portion of the application—
a statement that, if an applicant declines to register to vote, the fact that the applicant has declined to register will remain confidential and will be used only for voter registration purposes; and
(d) Change of address
(e) Transmittal deadline
Section was formerly classified to section 1973gg–3 of Title 42, The Public Health and Welfare, prior to editorial reclassification and renumbering as this section.