Sources tell The Canadian Press the shuffle will take place at midday and could involve as many as five ministers. Speculation had been running rampant about Ambrose's future after she was lambasted by the opposition and environmentalists over the past several months for her handling of the hot file.

She is widely expected to be heading toward Intergovernmental Affairs, an area in which she has experience from her days in the Alberta government.

"She is in good spirits and looking foward to whatever challenge the prime minister might give her," said one party source. "She's a team player."

Some of the names circulating as her potential replacement include Treasury Board President John Baird, Indian Affairs Minister Jim Prentice and Industry Minister Maxime Bernier.

A party source said it is believed no one new is being brought into cabinet, despite rumours that British Columbia MP James Moore may end up as a secretary of state in charge of the Vancouver 2010 Winter Olympics. Source...