Don Davies is a long-time resident of the Kensington neighbourhood in the Vancouver Kingsway riding, Davies is married to Sheryl Palm, a speech language pathologist at Vancouver Children’s Hospital. They have three children and a granddaughter.
Davies was first elected during the 2008 federal election. Davies has served as NDP critic for Public Safety and National Security, vice-chair of the House of Commons Standing Committee on Public Safety and National Security and deputy critic for Western Diversification. In the 41st Parliament, Davies served as Official Opposition critic for Citizenship, Immigration and Multiculturalism, and vice-chair of the House of Commons Standing Committee on Citizenship, Immigration and Multiculturalism, and then as Official Opposition critic for International Trade, deputy critic for Citizenship, Immigration and Multiculturalism, and vice-chair of the House of Commons Standing Committee on International Trade. A member of a number of parliamentary groups, he serves on the executives of the Canada–China, Canada–Philippines, and Canada–Europe Parliamentary Associations, and is a Canadian parliamentary delegate to the Council of Europe.
In the 42nd Parliament, Davies introduced more private member’s legislation than any other MP in Canada. This legislation included bills to establish universal pharmacare, a national school nutrition program, and free tuition for students with diverse needs. In the 43rd Parliament, Davies was re-appointed to the Health portfolio. He serves on the Standing Committee on Health and was appointed to the National Security and Intelligence Committee of Parliamentarians. Davies maintained a stance against the extradition of Meng Wanzhou after her arrest in Vancouver in 2018, claiming political interference in the case by US president.
He was appointed the NDP critic for finance on April 5, 2024.
After leader Jagmeet Singh stepped down, Davies was chosen by the party’s Federal Council as interim Leader of the New Democratic Party until the next leadership election.