Mayoral candidate Wayne Stewart says he will conduct a formal evaluation of every senior manager at city hall, if elected. (CBC)

One of Calgary's mayoral candidates says a comprehensive review of city management is needed.

Wayne Stewart said that if elected, he'd begin a formal evaluation of every senior manager.

"Those who are found to have acted in self-interest or in violation of city procurement policies will be replaced," Stewart is quoted as saying in a news release.

He said he's concerned that the city auditor was fired after reporting on cost overruns and the city's bidding process.

Stewart, a former oil and gas executive and an advocate for the homeless, said he believes council and management made Tracy McTaggart a scapegoat to deflect attention from "widespread fiscal mismanagement" at city hall.

Tracy McTaggart's contract as city auditor was terminated in June. (Courtesy Metro Calgary)

McTaggart was dismissed in June after an external review of her office found it failed to meet industry standards.

A month earlier, she had submitted a report that claimed systemic problems in how the city hands out contracts.

She said millions of dollars in contracts for projects — such as a new $25 million pedestrian bridge over the Bow River — were awarded without any competition, and resulted in dramatic cost overruns. She also found little paperwork to support some of those decisions.