Born in 1965 or 1966,[1] Redmayne received a Bachelor of Arts degree from the University of Otago.[2] She and her husband Richard have run Tunnel Hill farm in Turakina since 1993, through which they operate their lamb brands Coastal Lamb and Coastal Spring Lamb. Both the farm and the brands have won awards.[3][4][5][6] Redmayne is or has been a trustee for two local foundations, the Whanganui Community Foundation and Sport Whanganui.[7]
Redmayne worked in the Rangitīkei electorate offices of Simon Power and Ian McKelvie for over 20 years, which she said gave her a good understanding of the electorate and of the political world.[8] She has referred to McKelvie as her mentor.[9]
On 5 November 2022, Redmayne was announced as National's candidate for Rangitīkei at the 2023 general election.[10] During campaigning she said one of her priorities, if elected, would be returning a 24-hour police presence to Feilding.[11] She also identified the financial problems facing Ruapehu Alpine Lifts as an issue she would like to help solve as an MP.[12] Redmayne describes herself as "fiscally conservative and socially liberal. I’m pro-choice and I’m not particularly religious".[8] She also said that she would cross the floor if National Party leader Christopher Luxon proposed changing any New Zealand abortion laws.[13]
With 93.5% of the vote counted, Redmayne had received more than twice as many votes as the Labour candidate Zulfiqar Butt.[9] Final results released on 3 November confirmed that Redmayne had won by a margin of 9,785 votes.[14] She is the first female member of Parliament for the electorate.[12]
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