Career
Born in Falkirk in 1971 Martyn Day was raised and educated in Linlithgow where he still lives. He was first elected to West Lothian Council in the Scottish local elections, 1999 representing the Linlithgow ward. From 2007-2012 the Scottish National Party led the administration of West Lothian Council and Day was a key participant holding the portfolio of Development and Transport on the Council Executive, and served on over 40 committees and outside bodies.
After the Scottish local elections, 2012 the Scottish National Party found themselves in opposition in West Lothian and Day took on the post of spokesperson for Development and Transport and group whip.
He was chosen to contest the Linlithgow and East Falkirk constituency at the United Kingdom general election, 2015 and defeated the incumbent Labour Member of Parliament, Michael Connarty. He received 32,055 votes and a 52.0% vote share.