Colorado statewide initiative campaigns face Aug. 3 signature-submission deadline
Colorado statewide initiative campaigns seeking to qualify measures for the 2026 election must submit petition signatures to the Colorado Secretary of State by 5 p.m. on Aug. 3, 2026.
The deadline is the final signature-submission date in the state’s published initiative schedule for measures seeking access to the 2026 election ballot. It is a filing deadline, not a declaration that a proposed measure has qualified for voters.
Once signatures are submitted, the Secretary of State reviews the petition to determine whether it is sufficient. State initiative guidance says that review includes a random-sample verification process and that the office has up to 30 days to make its sufficiency determination.
Sept. 2, 2026, is listed as the deadline for that determination. The distinction is important: a campaign that meets the Aug. 3 filing deadline still must receive a sufficiency determination before its initiative can be treated as qualified for the ballot.
Filing begins the state review process
The Aug. 3 cutoff concerns the delivery of signatures to the Secretary of State. It does not resolve whether a petition meets the requirements for qualification. The next procedural stage is the Secretary of State’s verification and sufficiency review.
Colorado General Assembly guidance describes the review as a random-sample verification process. The guidance gives the Secretary of State up to 30 days after signature submission to determine whether a petition is sufficient, and it identifies Sept. 2 as the relevant sufficiency-determination deadline for the 2026 election cycle.
That timeline means the state’s evaluation follows, rather than precedes, the Aug. 3 filing date. A petition’s status therefore should not be described as ballot-qualified merely because signatures were delivered before the deadline.
The available official material establishes the statewide dates and review framework, but it does not identify individual campaigns that submitted petitions by Aug. 3. It also does not provide signature totals, the subjects of proposed measures, or petition-specific sufficiency outcomes.
What the dates mean for the 2026 ballot
For initiative campaigns, Aug. 3 is the point by which signatures must be in the hands of the Secretary of State to enter the state’s review process for the 2026 election. Sept. 2 is the listed deadline for the office to determine whether a petition is sufficient.
The state election calendar also identifies Aug. 3 as a petition-filing deadline connected to the 2026 election. Colorado’s general election is scheduled for Nov. 3, 2026.
Measures that complete the qualification process may potentially reach voters in that Nov. 3 election. But neither the filing deadline nor the calendar entry establishes that any particular initiative will appear on the ballot. That conclusion depends on the Secretary of State’s petition-specific sufficiency determination.
The available source packet does not establish whether any campaign filed by the deadline, and it does not establish that any petition has been declared sufficient. It also provides no basis to assess voter support, a campaign’s prospects, or the viability of any particular proposal.
Next confirmed milestone
Sept. 2 is the next confirmed statewide procedural date identified for petitions submitted for the 2026 election. By that deadline, the Secretary of State’s sufficiency review is expected to reach a determination under the published timeline.
For voters and campaigns, the sequence is straightforward but consequential: signature submission is due at 5 p.m. Aug. 3; the state then conducts its verification and sufficiency process; and only petitions determined sufficient can be considered qualified to proceed toward the Nov. 3 general election.
The state’s published calendar and initiative guidance provide the dates for that process, but not a list of filed measures or their outcomes. Any ballot-qualification announcement would require petition-specific information beyond the deadlines and general review rules now available.
Sources
- How to File Initiatives, Colorado General Assembly
- 2026 Election Calendar, Colorado Secretary of State