Ontario · City of Oshawa

How to run for Mayor in Oshawa

A plain-English guide to the 2026 cycle — eligibility, deadlines, paperwork, and key local contacts for mayor candidates in Oshawa, Ontario.

Election day: Monday, October 26, 2026
Population (2021)
175,383
Head of council
1 Mayor
Term
4 years
Wards
5

Step 1

Are you eligible?

On the day you file your nomination paper for mayor in Oshawa, you must be:

  • A Canadian citizen.
  • At least 18 years old.
  • A resident of Oshawa, OR a non-resident owner or tenant of land in Oshawa (or the spouse of one).
  • Not legally disqualified from running.
Common disqualifications include sitting judges, sitting MPs / Senators / MPPs (must resign before filing), municipal employees (must take an unpaid leave or resign), and people serving a sentence in a penal institution.

Step 2

What does the mayor do?

The Mayor is the head of council in Oshawa — chairs council meetings, is the public face of the city, and votes alongside councillors on by-laws, the annual budget, and major staffing decisions.

Region of Durham — Mayor + 5 Regional & City Councillors sit on Durham Regional Council

RoleSeatsTermNotes
Mayor14 yearsAt-large; sits on Durham Regional Council

Step 3

The nomination process

Filing happens at the City Clerk, in person during regular office hours and on nomination day until 2:00 PM. You'll need to bring:

  • Nomination paper, signed in the presence of the clerk or a commissioner of oaths.
  • 25 endorsement signatures from eligible electors of Oshawa.Municipalities with fewer than 4,000 eligible electors are exempt from the signature requirement.
  • Government-issued photo ID showing your name and qualifying address.
  • Filing fee: $200. Refundable in full if you file your campaign financial statement on time.

Where to file

City Clerk Services, Oshawa City Hall, 50 Centre Street South, Oshawa, ON L1H 3Z7. Phone 905-436-3311 / [email protected]. Filing by appointment.

Step 4

Key dates — 2026 cycle

DateEvent
May 1, 12:30 p.m.Nomination period opens
Aug 21, 6:00 p.m.Nomination period closes (last day to file)
October 26, 2026Election day
November 15, 2026New term of council begins
March 27, 2027Campaign financial statement due

Missing the financial-statement deadline can trigger automatic disqualification from running in the next cycle and forfeiture of your filing fee.

Step 5

Campaign finance

Oshawa runs under Ontario's Municipal Elections Act, 1996. The headline numbers for the 2026 cycle:

Per-individual contribution
$1,200
max from any one person to your campaign
Aggregate / additional rules
$5,000
across all candidates in the same municipality
Self + spouse contribution
lesser of $7,500 + $0.20 × eligible electors, or $25,000
combined cap
Spending limit
$7,500 + $0.85 per eligible elector
the City Clerk issues your written limit after nominations close
Corporate and union donations are banned. Cash gifts of $25 or less generally don't need to be tracked individually; anything more must be by cheque, debit, credit, money order, or e-transfer that traces to the contributor.

Local

Specific to Oshawa

  • Lower-tier of Durham Region. Two distinct councillor seats per ward: a "Regional and City Councillor" (sits on both councils) and a "City Councillor" (Oshawa only).
  • Voters in each ward elect both a Regional & City and a City Councillor.
  • Durham Regional Chair is elected directly region-wide (separate ballot from Oshawa offices).

Ballot

Other roles on the same ballot

Voters in Oshawa also choose:

  • Regional & City Councillor — One per ward; serves on Oshawa Council + Durham Regional Council
  • City Councillor — One per ward; serves on Oshawa Council only
  • DDSB Trustee (English Public) — Durham District School Board
  • DCDSB Trustee (English Catholic) — Durham Catholic DSB
  • CSV Trustee — French Public
  • MonAvenir Trustee — French Catholic

Sources

Official resources

Related guides

Also running in Oshawa?

Considering a different office? We have plain-English guides for every position on the Oshawa ballot:

This page is a plain-English summary, not legal advice. Always confirm details with the City Clerk and the most recent provincial candidate guide before filing. Last reviewed 2026-05-01.

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