He was a Conservative Party member House of Commons of Canada who served from 2011 to 2015 representing the Toronto riding of Etobicoke—Lakeshore.

In February 2015, Trottier was appointed Parliamentary Secretary to the Minister of Foreign Affairs and for La Francophonie.

Previously, he was appointed Parliamentary Secretary to the Minister of Public Works and Government Services in September 2013.

[3][4] He previously served as the President of the Etobicoke—Lakeshore Conservative Association and of the Sunnylea Co-operative Nursery School.

However, he benefited from a collapse in Liberal support in Toronto which saw the Conservatives claim a total of eight seats in the city.