Warren-Clark is a non-practicing barrister and solicitor.[2] She has been active in the field of domestic violence since the early 2000s, and was the manager of Women's Refuge in Tauranga prior to her election.[3] The refuge had to operate on a mere $21 a week fund from Government which she described as "appalling" and had to raise $500,000 every year in fundraising to sustain the refuge.[4]
Warren-Clark stood for the Labour candidacy in the Tauranga electorate in 2017 but was beaten by Jan Tinetti.[5] Her successful candidacy to represent Labour in the Bay of Plenty electorate was announced in February 2017.[2]
During the 2017 election, Warren-Clark stood on the Labour's party list, where she was placed 39th.[6] She also contested the Bay of Plenty electorate but was defeated by NationalMPTodd Muller by a margin of 13,996 votes.[7] Initially she had not been elected on the provisional results, however Labour gained enough party votes when special votes were counted for Warren-Clark to be allocated a seat.[8]
During the 2020 New Zealand general election, Warren-Clark contested the Bay of Plenty electorate again, standing against incumbent Todd Muller. She lost by a final margin of 3,415 votes.[9] However, she was elected on the party list.[10]
During the 2023 New Zealand general election, Warren-Clark contested the Whangārei electorate but lost to National MP Shane Reti by a margin of 11,424 votes.[11] She was also too low on the Labour Party list and left Parliament.