Career
He represented the riding of Northumberland—Quinte West. Milligan grew up in Warkworth, Ontario in the municipality of Trent Hills. He taught History and English at Campbellford District High School from 1998 until his election to the legislature.
In the 2011 provincial election he ran as the Progressive Conservative candidate in the riding of Northumberland—Quinte West.
He defeated Liberal incumbent Lou Rinaldi by 707 votes. In the 2014 election he was in rematch with Rinaldi but this time lost to him by 3,887 votes.
During his tenure in parliament, he served as critic for interprovincial trade and education issues.
