A dinner and Liberal party sendoff will be held on Nov. 14 for Jon Gerrard, who is retiring after 15 years as leader.
Gerrard, a pediatrician and author of two books on bald eagles, became the Liberal party leader and MLA for River Heights in October 1998.
He has also been known for his work in cancer research and as an advocate for saving Lake Winnipeg from continued deterioration and for protecting endangered species.
"Dr. Jon Gerrard was a valued colleague and friend when he served In the House of Commons as my Minister of State for Science and Technology as well as Western Diversification," said former Prime Minister Jean Chrétien, in a statement. "In 1998, he became the leader of the Manitoba Liberal Party and kept the spirit of our party alive during difficult times, setting the agenda on many critical issues to the province over a 15-year period."