In connection with any election conducted on or after May 10, 2013, if a mail ballot sent to a registered elector is returned by the United States postal service as undeliverable, the county clerk and recorder shall mark the registration record of that elector with the word "Inactive". The clerk and recorder shall mail a confirmation card pursuant to section 1-2-605 to any elector whose ballot was returned by the United States postal service as undeliverable.
C.R.S. § 1-7.5-108.5
In 2013, this section was amended by the "Voter Access and Modernized Elections Act". For the short title and the legislative declaration, see sections 1 and 2 of chapter 185, Session Laws of Colorado 2013.