Connecticut candidate filing & campaign-finance deadlines
Official 2026 report due dates for Connecticut state candidates file with Connecticut State Elections Enforcement Commission (SEEC).
3 more deadlines follow in this cycle.
Electbase emails you before every deadline — 14, 7, and 2 days out — and stays current as the official schedule changes.
Get deadline remindersIncluded in every Electbase plan · See pricingThis page also covers Connecticut candidate-filing (ballot access) deadlines for 2027–2028 — the process of becoming a qualified candidate, distinct from the campaign-finance reporting below. Here's how to run for office in Connecticut: what to file, when, and with whom.
8 report deadlines for the 2026 cycle.
These are the campaign-finance report due dates a Connecticut state candidate files with Connecticut State Elections Enforcement Commission (SEEC) for the 2026 election cycle, stored verbatim from the official schedule. The 2026 primary is Aug 11, 2026.
| Due | Type | Report | Covers |
|---|---|---|---|
| Periodic | CT January 10 Filing (Q4 2025) Quarterly filing covering October 1 – December 31, 2025 (January 10 falls on a Saturday, so due Monday, January 12). |
Oct 1, 2025 – Dec 31, 2025 | |
| Periodic | CT April 10 Filing Quarterly filing covering January 1 – March 31, 2026. |
Jan 1, 2026 – Mar 31, 2026 | |
| Periodic | CT July 10 Filing Quarterly filing covering April 1 – June 30, 2026. |
Apr 1, 2026 – Jun 30, 2026 | |
| Pre-election | CT 7th Day Preceding Primary Filing Pre-primary filing (7th day before the August 11 primary) for non-CEP candidates in a primary. |
Jul 1, 2026 – Aug 2, 2026 | |
| Post-election | CT 30 Days Following Primary Filing Post-primary filing, 30 days after the August 11 primary, for primary-race committees. |
Aug 3, 2026 – Aug 31, 2026 | |
| Periodic | CT October 10 Filing Quarterly filing through September 30 (October 10 is a Saturday and October 12 a holiday, so due Tuesday, October 13). Coverage start varies by primary status. |
— – Sep 30, 2026 | |
| Pre-election | CT 7th Day Preceding Election Filing Pre-general filing (7th day before the November 3 election) for non-CEP general-election candidates. |
Oct 1, 2026 – Oct 25, 2026 | |
| Periodic | CT January 10 Filing (post-general) Post-general quarterly filing through December 31, 2026 (January 10, 2027 is a Sunday, so due Monday, January 11). Coverage start varies by CEP status. |
— – Dec 31, 2026 |
Shaded rows are deadlines that have already passed.
Good to know
The standard NON-CEP schedule — for candidates NOT participating in Connecticut's Citizens' Election Program (public financing). CEP participants instead file weekly supplemental reports (First/Second/Final) around each election. The four quarterly filings (Jan 10 / Apr 10 / Jul 10 / Oct 10) are required of every open committee; the pre-primary and post-primary reports apply only to candidates in a primary. Some coverage-start dates vary by CEP participation and primary status. Weekend/holiday shifts are already applied. Conditional deficit/termination reports are not listed here.
Connecticut candidate-filing deadlines — 2027–2028.
Deadlines to become a qualified candidate for office in Connecticut — declarations of candidacy, nominating petitions, and related ballot-access filing requirements — compiled from Connecticut Secretary of the State, Elections Services Division. Distinct from the campaign-finance report deadlines above.
2028
Federal
U.S. Senate
Candidacy method: Party Primary · Deadline type: Party primary filing
Petition deadline: Jun 6, 2028
Files with: Connecticut Secretary of the State
Signatures: At least 2% of enrolled members of the political party statewide for US Senate candidacies
Connecticut General Statutes Title 9, Chapter 153 - Nominations and Political Parties · accessed Jul 13, 2026
Not yet independently verified
The filing deadline for U.S. Senate in Statewide for the 2028 Connecticut Primary Election (Aug 8, 2028) is not yet a confirmed date (calculated from statute — not an official calendar date); check with Connecticut Secretary of the State. Source: Connecticut Legislature.
U.S. Senate
Not yet published. Write-in candidates must register; no party designation on registration form. Candidate must be registered elector of Connecticut.
Filing authority: Connecticut Secretary of the State.
Next check: Sep 1, 2028.
Connecticut General Statutes Title 9, Chapter 153 - Nominations and Political Parties · accessed Jul 13, 2026
Last verified Jul 13, 2026
The official filing deadline for U.S. Senate in Statewide for the 2028 Connecticut State General Election (Nov 7, 2028) has not yet been published; check with Connecticut Secretary of the State. Source: Connecticut Legislature.
U.S. House of Representatives
Candidacy method: Party Primary · Deadline type: Party primary filing
Petition deadline: Jun 6, 2028
Files with: Connecticut Secretary of the State
Signatures: At least 2% of enrolled members of the political party in the Congressional district
Connecticut General Statutes Title 9, Chapter 153 - Nominations and Political Parties · accessed Jul 13, 2026
Not yet independently verified
The filing deadline for U.S. House of Representatives in Statewide for the 2028 Connecticut Primary Election (Aug 8, 2028) is not yet a confirmed date (calculated from statute — not an official calendar date); check with Connecticut Secretary of the State. Source: Connecticut Legislature.
State Legislative
State Senate
Candidacy method: Party Primary · Deadline type: Party primary filing
Petition deadline: Jun 6, 2028
Files with: Connecticut Secretary of the State
Signatures: At least 5% of enrolled members of the political party in the senatorial district
Connecticut General Statutes Title 9, Chapter 153 - Nominations and Political Parties · accessed Jul 13, 2026
Not yet independently verified
The filing deadline for State Senate in Statewide for the 2028 Connecticut Primary Election (Aug 8, 2028) is not yet a confirmed date (calculated from statute — not an official calendar date); check with Connecticut Secretary of the State. Source: Connecticut Legislature.
State Representative
Candidacy method: Party Primary · Deadline type: Party primary filing
Petition deadline: Jun 6, 2028
Files with: Connecticut Secretary of the State
Signatures: At least 5% of enrolled members of the political party in the assembly district
Connecticut General Statutes Title 9, Chapter 153 - Nominations and Political Parties · accessed Jul 13, 2026
Not yet independently verified
The filing deadline for State Representative in Statewide for the 2028 Connecticut Primary Election (Aug 8, 2028) is not yet a confirmed date (calculated from statute — not an official calendar date); check with Connecticut Secretary of the State. Source: Connecticut Legislature.
Judicial
Judge of Probate
Candidacy method: Party Primary · Deadline type: Party primary filing
Petition deadline: Jun 6, 2028
Files with: Connecticut Secretary of the State
Signatures: At least 5% of enrolled members of the political party in the probate district
Connecticut General Statutes Title 9, Chapter 153 - Nominations and Political Parties · accessed Jul 13, 2026
Not yet independently verified
The filing deadline for Judge of Probate in Statewide for the 2028 Connecticut Primary Election (Aug 8, 2028) is not yet a confirmed date (calculated from statute — not an official calendar date); check with Connecticut Secretary of the State. Source: Connecticut Legislature.
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Electbase compiles these dates from official state sources as a workflow aid. It is not legal advice. Confirm every deadline with your filing authority before you rely on it.
Last updated August 27, 2026