Complex sentence: Her great uncle Edouard Blondin was a Conservative Minister in Prime Minister Robert Borden, who went on to become Speaker of the Senate, and her uncle Ross Dowson ran for Mayor of Toronto after the war on a very left wing platform.
Split into simpler sentences: Her great uncle Edouard Blondin was a Conservative Minister in Prime Minister Robert Borden's government, and went on to become Speaker of the Senate. Her uncle Ross Dowson ran for Mayor of Toronto after the war on a very left wing platform.