Local government

Pham was elected to the Canterbury Regional Council, also known as Environment Canterbury, at the 2016 New Zealand local elections. She ran her campaign while working on Raoul Island.^[11] She stood as a candidate for the four-member Christchurch constituency under the ticket The People's Choice–Independent and received the most votes of the eight candidates.^[12] In the 2019 elections she ran with Axel Downard-Wilke on the ticket The Common Good , choosing not to run with The People's Choice.^[13][14] She was re-elected to the council in the new Christchurch Central constituency.^[15] Pham has been a resource management commissioner, and a freshwater commissioner at the Office of the Chief Freshwater Commissioner.^[16][11]

Member of Parliament

Pham was selected by the Green Party of Aotearoa New Zealand to contest the Banks Peninsula electorate at the 2023 New Zealand general election.^[4] She was placed at number six on the national party list.^[17] During the 2023 election, Pham came third place in the Banks Peninsula electorate but was elected to Parliament on the party list.^[18][19]

In late November 2023, Pham assumed the Green Party's environment, water services, biosecurity, emergency management and recovery, land information, statistics, tourism and hospitality, and customs spokesperson portfolios.^[20]

In the 2026 election, Pham would contest the Kenepuru electorate.^[21]