Европа Экология Зелёные
The commune's unusual demographics lend it to unusual political leanings; in the 2012 presidential election, Trémargat was the one of the few communes where Eva Joly of Europe Ecology – The Greens secured a plurality of the vote, with 29.03% support, followed closely by Jean-Luc Mélenchon of the Left Front at 27.42%.