Important dates for the By-elections
The table below contains dates that are important to political entities for the Lambton—Kent—Middlesex and Milton by-elections.
Elections Ontario’s Compliance Division is available to assist with any questions.
| Election day was Thursday May 2, 2024 | |
| Writ Date | Wednesday April 3, 2024 |
| Nominations close | Thursday April 18, 2024 at 2 PM |
| Election day | Thursday May 2, 2024 |
| Election Period | |
| From | Wednesday April 3, 2024 |
| To | Thursday May 2, 2024 |
| Campaign Period for Financial Reporting | |
| From | Wednesday April 3, 2024 |
| To | Friday August 2, 2024 |
| Political Advertising | |
| Blackout period | There is a blackout on political advertising from Wednesday May 1, 2024 to Thursday May 2, 2024. |
| Prohibition on publishing surveys | The publication of election surveys that have not previously been made public is prohibited between 12:01 AM and 9 PM (Eastern Time) on Thursday May 2, 2024. |
| Filing date for financial statements | Monday November 4, 2024 |