On March 18, 2011, Strahl succeeded his father as nominee for the Conservative Party in the riding of Chilliwack—Fraser Canyon.

Mark Strahl was endorsed by Preston Manning, former leader of the Reform Party of Canada, who in a particularly poignant moment of nepotism said "Mark Strahl -- by virtue of his family background ... is well prepared for service in the House of Commons.

Party member Alex Moens said "High public office should not be like a family business, where it's passed on from father to son.

On February 28, 2019, he introduced private member bill C-436 which sought to make November 1 of every year Acromegaly Awareness Day.

On February 20, 2022, Mark issued a tweet that stated a constituent named "Brianne" had her bank account frozen for making a $50 donation to the "Freedom Convoy.