Career
He was a prominent backer of Doctor Bill Wilson who stood against John Swinney for the Scottish National Party leadership in 2003. He was suspended from the Scottish National Party on 25 April 2004 after publicly criticising John Swinney, and was expelled from the Scottish National Party on 10 July 2004, soon after Swinney had resigned. After becoming an Independent Managing Successful Programmes, Campbell Martin played a prominent role in fighting a number of decisions taken by Labour-led North Ayrshire Council.
He has also continued his opposition to what he considers to be the centre-right re-positioning of the Scottish National Party and its advocacy of a "culture of independence" rather than national independence.
Campbell Martin stood as an Independent candidate in the Cunninghame North constituency at the May 2007 Scottish Parliament Election, securing 4,423 votes (146%), but was not re-elected. Campbell Martin now edits the3towns com, an online local newspaper covering the three North Ayrshire towns of Ardrossan, Saltcoats and Stevenston.
In August 2011 he joined the Scottish Socialist Party, and on 1 October 2011 he spoke at an SSP fringe meeting in Glasgow following the STUC anti-cuts demonstration. He participated as a delegate at the SSP national conference in March 2012.
He was the SSP candidate for the Ardrossan and Arran ward on North Ayrshire Council in May 2012, but he was not elected.