Alberta Premier Alison Redford is resigning.
Redford has been struggling to deal with unrest in her Progressive Conservative caucus over her leadership style and questionable expenses.
Last week, a backbench member of her government quit, calling Redford a bully, and earlier this week, an associate minister resigned, saying the party has issues with entitlement.
Redford took over the Conservative leadership in 2011 and led the party to a victory over the hard-charging Wildrose in the 2012 provincial election.
She is the second Tory premier to resign the job after holding it for less than five years.
Alberta Premier Ed Stelmach resigned after only four years as he faced a caucus revolt of his own over his budget.