David Breen Seymour (born 24 June 1983) is a New Zealand politician serving as the Member of Parliament (MP) for Epsom and Leader of ACT New Zealand since 2014. A graduate of the University of Auckland, Seymour worked for conservative think tanks in Canada, before returning to New Zealand and contesting for election to Parliament. He entered the House of Representatives in 2014 as ACT's sole MP, after which he was elected as party leader, replacing Jamie Whyte. Seymour has embraced libertarian social policies since becoming party leader, such as supporting the legalisation of euthanasia, and introduced a bill on this issue. Seymour has appeared extensively on television (including a dance contest, Dancing With the Stars) during his leadership.