From 1968 to 1976, Sawyer was a member of the Michigan Law Revision Commission. From 1975 to 1976, he was prosecuting attorney for Kent County. In 1976, Sawyer defeated incumbent DemocratRichard Vander Veen to reclaim Michigan's 5th congressional district for the Republicans. The seat had been held by Gerald R. Ford until he was appointed to become Vice President of the United States; it had been in Republican hands without interruption from 1913 until Vander Veen's victory. Sawyer benefited from the presence of Ford atop the ticket in his bid for a full term as president.
Sawyer was elected to the Ninety-fifth and to the three succeeding Congresses, serving from January 3, 1977 to January 3, 1985. However, he did not have nearly as easy a time of it as Ford or his Republican predecessors. In 1978, he only defeated Democratic challenger Dale Sprik by 0.7 percent, a difference of 1,100 votes.[2] He defeated Sprik by seven points in a rematch.[3] In 1982, he defeated former state representative Stephen Monsma with 53 percent of the vote.[4] These would be the last times that a Democrat managed 40 percent of the vote in the district in the 20th century (it was renumbered as the 3rd district in 1993).