Thompson was elected as mayor of Osgoode in the
1997 elections, defeating Jim Waddell and the incumbent mayor
Lloyd Cranston. Osgoode was amalgamated into Ottawa in 2001. In the first municipal elections for the amalgamated city,
held in 2000, Thompson won a majority of the vote, defeating John Cyr and Dwayne Acres. In the
2003 election he was
acclaimed. In 2006, Thompson won in a landslide, defeating Robert Fowler with 85% of the vote. Of all the winning candidates of the
2006 municipal elections, Thompson had the highest percentage of donations coming from corporations (81.9%).
In 2010, Thompson won two thirds of the vote in his ward, defeating Mark Scharfe and Bob Masaro. Thompson had planned on retiring, but was coaxed to run again. He did not run again in the
2014 elections. Thompson had intended to run provincially for the
Ontario Progressive Conservative Party in the new riding of
Carleton for the
2018 Ontario general election but dropped out. In the 2022 Municipal Election for the City of Ottawa, Doug Thompson lost in an attempt to return to city council. In June 2025, he ran in a by-election in Osgoode Ward, which was held to replace
George Darouze. In the by-election, he finished second with 22.6% of the vote, losing to
Isabelle Skalski. ==References==