The Boulder County Elections Division cannot withdraw or cancel your voter registration over the phone. You must withdraw your registration online or by mail/email.
Online Voter Registration Withdrawal/Cancellation – requires either Colorado Driver’s License number, Colorado ID number or last 4-digits of your Social Security number.
Voter Registration Withdrawal/Cancellation by mail / email / fax – download one of the following forms and return by mail, email, or fax.
By Mail: Elections Division, 1750 33rd St., Suite 200, Boulder, CO 80301
By Email: Email a signed PDF to: Vote@BoulderCountyVotes.org
By Fax: 303-413-7728