OTTAWA – Long-time Conservative MP Gerry Ritz is expected to announce he’s leaving federal politics, sources tell CTV News.

Ritz’s office confirmed he is making an announcement about the future of his political career tomorrow.

Ritz has been the MP for Battlefords-Lloydminster, Sask., for 20 years. His office would not comment on the nature of the announcement, but said Ritz will have more to say Thursday morning.

First elected as Reform Party MP in 1997, Ritz became minister of Agriculture and Agri-Food in 2007 under then- prime minister Stephen Harper, and held that cabinet post until the Liberals formed government in 2015. Since the Conservatives have been in opposition, Ritz had been international trade critic, a position Scheer gave to Ontario MP Dean Allison when he unveiled his critic roster Wednesday.