Complex sentence: A participant in debates at the Glasgow University Union, he was a member of the Glasgow University Scottish Nationalist Association (GUSNA) and the Scottish Covenant Association, and was the campaign manager for the successful bid to have John MacCormick elected Rector of the University.
Split into simpler sentences: A participant in debates at the Glasgow University Union, he was a member of Glasgow University Scottish Nationalist Association (GUSNA) and the Scottish Covenant Association. He was the campaign manager for the successful bid to have John MacCormick elected Rector of the university.