2009 Action démocratique du Québec leadership elections
| Date | October 18, 2009 |
|---|---|
| Resigning leader | Mario Dumont |
| Won by | Gilles Taillon |
| Ballots | 2 |
| Candidates | 3 |
| Date | November 19, 2009 |
|---|---|
| Resigning leader | Gilles Taillon |
| Won by | Gérard Deltell |
| Ballots | None |
| Candidates | 1 |
The Action démocratique du Québec leadership election, 2009 took place on October 18, 2009 electing Gilles Taillon on the second ballot by a margin of two votes over Éric Caire. On November 19, 2009, Gérard Deltell was chosen to replace Taillon after a leadership vacuum.