David grew up in Whangarei with two younger brothers, where his parents were a pharmacist and a draughtsman. As a teenager, he moved to Auckland for high school before graduating from the University of Auckland in electrical engineering and philosophy.
Before politics, David worked as an electrical engineer in New Zealand and for private sector think tanks in Canada. He has served as ACT Leader and MP for Epsom since 2014. In Government, he was responsible for Regulatory Reform and charter schools. From opposition, he passed the End-of-Life Choice Act.
Fearless and principled, he is known for standing up for his constituents and, if necessary, to every other party. He has been named MP of the year twice, and ‘the only one talking sense’ too many times to count.