He became the interim leader of the Progressive Senate Group on November 14, 2019, and served for slightly less than one month in the role.
He graduated from the Royal Military College of Canada in Kingston, Ontario in 1968 with a Bachelor of Engineering degree.
Day returned from his practice of law in Ottawa, Ontario, to contest the by-election as a candidate of the Liberal Party of Canada, but was defeated in what had long been a Progressive Conservative stronghold.
He faced the same electorate three times in two years due to the rapid succession of general elections that came in May 1979 and February 1980.
In 1982, he ran for the leadership of the New Brunswick Liberal Party, but was narrowly defeated on the final ballot by Doug Young.
Day, who sought election to the Legislative Assembly of New Brunswick in a Saint John riding, was defeated in his fifth contest in five years.
While in the legislature, she served in the cabinets of premiers Frank McKenna, Ray Frenette, and Camille Thériault.