Career
Prior to his election he was the Chief Executive of the West Coast District Health Board. He is also an author, long time gay rights activist and a former executive director of the New Zealand Acquired Immune Deficiency Syndrome Foundation. Hague has been an activist for a number of causes.
In the 1980s he was heavily involved in the campaign against sporting contacts with apartheid South Africa.
In 1989 he co-authored Honouring the Treaty: an introduction for Pakeha to the Treaty of Waitangi. Hague is openly gay and in 1988 began work as a research officer for the New Zealand Acquired Immune Deficiency Syndrome Foundation, which provides education on Human Immunodeficiency Virus/Acquired Immune Deficiency Syndrome issues and advocacy and support for those with Human Immunodeficiency Virus and Acquired Immune Deficiency Syndrome. From 1998 to 2003 he was the Foundation"s executive director
He has represented New Zealand at United Nations, United Nations Educational, Scientific and Cultural Organization and Commonwealth conferences on apartheid and on Acquired Immune Deficiency Syndrome. He has also campaigned on behalf of cycling. In 2005 he became Chief Executive of the West Coast District Health Board, which he had worked for since 2003.
Hague was placed at number seven on the Green Party list for the 2008 election.
He was elected as a Green Party Member of Parliament and gained the third highest number of candidate votes in the West Coast-Tasman electorate. The bill, which passed its first reading 80-40, was approved by the committee. Hague said once the bill had passed its third reading, in April 2013, there would be a number of "incredibly emotional" weddings between gay couples.