Rakhi Pancholi

The former mayor of Calgary is now officially part of the race to replace Rachel Notley as Alberta NDP leader. In the process, he's challenging the very nature of the party — and its inclination towards choosing principles over power.

Alberta's former deputy premier entered the province's NDP leadership on Sunday with criticism of the federal carbon levy and Prime Minister Justin Trudeau.

The United Conservative government removed the essay from its legislature website Tuesday following an outcry of condemnation.