Coloradoans: If you receive long voter registration document claiming intent to confirm your address [View all]
which purports to be from the Secretary of State's office (and with a return address to the SOS office), look carefully. If it was mailed FROM THE VOTER PARTICIPATION CENTER in Denver, no matter how official it looks, do not complete it.
I was angry to have received it, since I know I had corrected my home address on the SOS official voter site a year ago and this form was asking for all that information, driver's license, phone number and email address.
I called the county voter registrar's office and they affirmed that this is from a 501C voter group--not from the SOS office and not officially sanctioned by the SOS office, though it appears that our a-hole SOS is enabling them. The representative from the county registrar indicated she and other registrars were writing official complaints and she told me to discard it.
Here's where you SHOULD go if you have questions about your registration:
https://www.sos.state.co.us/voter-classic/secuVoterSearch.do?transactionType=voterSearch
Don't let these a'holes get your information and don't be deceived.
I'm going to edit this to add that residents of other states may well receive similar mailings. If in doubt, PLEASE, call your local voter registrar!