 Prior to the 2006 Thai coup d'état, he served as a member of the Parliament for Buriram Province and was a Cabinet minister with the Thai Rak Thai party.From 2002 to 2005, he was Deputy Minister of Agriculture and Agricultural Cooperatives.Following the 2006 Thai coup d'état and the subsequent dissolution of Thai Rak Thai for corruption, Newin and his friends, mostly members of the National Assembly from the south of Isan (the northeastern region), shifted from the ruling (now also dissolved) People Power Party (PPP) to the opposition Democrat Party during the 2008 Thai political crisis.