These dates are also found on the PDC's Calendar of Events.

Key dates for 2022 special elections are also available.

Within 2 weeks of organizing or becoming a candidate

Register the campaign. (Candidates also file an F-1.)

NOTES:  Committees organizing within three weeks of election must register within 3 business days of organizing.

File an amended registration within 10 days of any changes.
January 10 File a C-3 for each deposit made in the previous month and a C-4 report that covers the period through Dec 31
February 10 File a C-3 for each deposit made in the previous month and a C-4 report that covers the period through Jan 31
March 10 File a C-3 for each deposit made in the previous month and a C-4 report that covers the period through Feb 28
April 11 File a C-3 for each deposit made in the previous month and a C-4 report that covers the period through Mar 31
May 10 File a C-3 for each deposit made in the previous month and a C-4 report that covers the period through Apr 30
May 16-20 Declaration of candidacy filing week
June 1 Begin filing C-3 reports weekly, each Monday, for deposits made during previous 7 days (Monday through Sunday)
June 10 File monthly C-4, if necessary, that covers the period through May 31
June 21 Last day before primary election to change from mini to full reporting without special circumstances (See WAC 390-16-125)
July 12

Candidates appearing on the primary election ballot file a C-4 that covers the period June 1 through July 11. So do committees supporting or opposing candidates.

Candidates not on the primary election ballot and committees only supporting or opposing general election ballot measures file monthly reports in June, July and August. These reports due on the 10th of the following month.
July 23 - Aug 1 Campaign books open for public inspection
July 26 Candidates appearing on the primary election ballot and committees participating in the primary file a C-4 that covers the period July 12 through July 25
July 26 - Aug 1

Special reports due if candidate or committee receives contributions of $1,000 or more from a single source, or committee makes contributions of $1,000 or more.

NOTE: Does not constitute authority to exceed applicable local or state contribution limit
AUGUST 2 PRIMARY ELECTION DAY
August 31 Last day before general election to change from mini to full reporting without special circumstances (See WAC 390-16-125)
September 12

Post-primary C-4 due that covers the period July 26 through August 31

Candidates not on the primary election ballot and committees that did not participate in the primary file a report for the month of August
October 18 21-day pre-general C-4 report due - report for the period Sept 1 through Oct 17
October 18 - November 7
  1. Special reports due if candidate or committee receives contributions of $1,000 or more from a single source, or if a committee makes a contribution of $1,000 or more.
  2. A candidate or committee may not receive contributions from a single source exceeding $5,000 in the aggregate unless it is from the state committee of a bona fide major or minor political party. The exception is ballot measure committees, which may receive larger contributions. 
October 29 - November 7 Campaign books open for public inspection
November 1 7-day pre-general C-4 report due - report for the period Oct 18 through Oct 31
November 7 Last Monday that weekly C-3 reports must be filed
NOVEMBER 8 GENERAL ELECTION DAY
December 12 Post-general C-4 due that covers Nov. 1 through Nov. 30. File C-3s that have not been filed for any deposits made in November.
January 10, 2023 End of election cycle C-4 due that covers Dec. 1 through Dec. 31. File C-3s for any deposits made in December.