Leanne Castley has stepped down as leader of the Canberra Liberals.

Jeremy Hanson has also stepped down as deputy leader.

Ms Castley took over the leadership just one year ago in the wake of Labor's seventh-straight election victory.

The move follows weeks of turmoil within the opposition, including the removal of Elizabeth Lee and Peter Cain from the party room after they crossed the floor on a vote in the ACT Legislative Assembly.

In a joint statement, Ms Castley and Mr Hanson said they made the decision "to give the Canberra Liberals the best possible chance of success in the 2028 election".

"A vote will be held to elect a new leadership team, and neither of us will be contesting any leadership positions," the statement said.

"In the spirit of ensuring a genuine fresh start for

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