Statewide

Amendment 84Mail Ballot Voter Identification

Official ballot title

Shall there be an amendment to the Colorado Constitution requiring a voter to sign and include the last four digits of their social security number or their Colorado driver’s license or identification card number on the outside of their mail ballot for any federal or state election, and, in connection therewith, allowing the voter to correct missing or incorrect information, including with alternative forms of identification; and prohibiting a county clerk and recorder from counting the mail ballot unless the problem is fixed?

Verbatim from: Amendments and Propositions on the 2026 Ballot (Colorado Secretary of State)

Summary

Requires mail-ballot voters to include identifying numbers (last four digits of SSN or Colorado driver’s license/ID number) in addition to a signature, with a process to fix missing or incorrect information.

Plain-language summary written for this guide from the sources below.

What a YES vote does

A “yes” vote on Amendment 84 requires voters to provide identification information with their mail ballot, in addition to their signature.

What a NO vote does

A “no” vote on Amendment 84 continues the current signature-only verification system for mail ballots.

Official text from the Blue Book (“What Your Vote Means”).

How it got on the ballot

Citizen initiative petition #362. The Secretary of State found the petition sufficient on Aug 26, 2026. [Colorado Secretary of State: 2025–2026 initiative filings and petition status]
Signatures: 180,110 submitted; 133,321 valid. [Colorado Secretary of State: 2025–2026 initiative filings and petition status]
Requirement: 124,238 valid signatures. Initiatives that amend the Colorado Constitution must also include signatures from at least 2% of registered voters in each state Senate district. [Colorado Secretary of State: 2025–2026 initiative filings and petition status]
Certified to the ballot by the Secretary of State Sept 4, 2026. [SOS ballot certification news release, Sept 4, 2026]

Placed on the ballot by: Citizen initiative (Initiative #362)
Vote needed to pass: 55 percent of votes castBlue Book: “Passes with 55 percent of the vote.” SOS: “Requires 55% approval because it adds language to the state constitution.”

Official fiscal information

Increases state and local spending by up to $2.7 million in budget year 2026-27 and $1.2 million annually in future years. (Estimated)
County spending up to $2.5 million in 2026-27 and up to $1.2 million in future years; about 45 percent reimbursed by the state (up to $1.1 million in 2026-27; up to $500,000 in future years). (Estimated)
Department of State outreach: $100,000 (2026-27), $200,000 (2027-28), and about $20,000 per primary/general election thereafter; business filing fees may need to be raised. (Estimated)

From the official source’s fiscal section. Figures marked “(Estimated)” are estimates or projections in the source.