A member of the Liberal Party, she has represented the Toronto riding of Davenport in the House of Commons of Canada since her initial election in 2015, and was reelected in 2019 and in 2021.

[8] Prior to her election, Dzerowicz worked as the director of strategic planning and communication at the Bank of Montreal,[9] as a senior political staffer to former provincial cabinet minister Gerry Phillips, as the vice-chair of the Platform Committee for the Ontario Liberal Party[7] and in biotechnology.

[13] Dzerowicz did not answer questions about the Canadian Radio-television and Telecommunications Commission wholesale internet rates or the government's change of policy away from electoral reform.

[16] In March 2024, Dzerowicz broke ranks with her party by calling for an arms embargo on Israel, citing calls from constituents and a February 23 statement from the Office of the United Nations High Commissioner for Human Rights, which warned that arms exports to Israel could violate international humanitarian law if used in Gaza.

[17] In June 2024, Dzerowicz’s office in Davenport was vandalized with red paint, and the words “Rafah is burning, Toronto will too” were spray-painted on the building.