He began his political career at the municipal level, serving as a warden in Northumberland County, and as reeve of Cramahe Township. Galt was also a school trustee, and chaired the Colborne-Cramahe Community Economic Development Commission in 1994. Galt was elected to the Ontario legislature in the 1995 provincial election, defeating incumbent LiberalJoan Fawcett by over 6,000 votes in the Northumberland riding. The Progressive Conservatives won the election under the leadership of Mike Harris, and Galt sat as a backbench supporter. He became known for asking "softball" questions. Galt was re-elected in the 1999 provincial election, though by only 903 votes over Liberal Carolyn Campbell. He introduced a resolution in the Legislature to bring forward greater protection against cruelty to animals and tried to ban riding in the back of pick-up trucks. Galt also introduced a Private Member's Bill to create a Robert Baldwin Day in Ontario which was later endorsed by Andrew Redden in an article published in the Canadian Parliamentary Review. In 2000, Galt precipitated a minor crisis in the legislature by accidentally reading out the names of certain young offenders, whose identities were protected by law. Galt was actually praising the young offenders for graduating from a young offenders program while forgetting that they were still young offenders. Rob Sampson, the Minister of Correctional Services, had to temporarily resign from office to show ministerial accountability for Galt's error. Galt served as chair of the Premier's Task Force on Rural Economic Renewal, which toured the province and consulted with other jurisdictions. Amongst other initiatives, the findings of this Task Force led to the creation of the O.S.T.A.R. program and Rural Economic Development funding initiative. Galt supported Ernie Eves to replace Harris as party leader in 2002, and was named by Eves as a minister without portfolio and chief government Whip on August 22 of that year. The Progressive Conservatives were defeated in the 2003 provincial election, and Galt lost his seat to Liberal candidate Lou Rinaldi by approximately 2,500 votes.
Cabinet positions
Federal politics
In early 2004, Galt supported Tony Clement's unsuccessful campaign to become leader of the Conservative Party of Canada. Galt himself ran as a Conservative in the 2004 federal election, challenging Liberal incumbent Paul Macklin in the federal riding of Northumberland. Macklin defeated Galt by 313 votes.