Career
As Secretary, he promoted a Eurocommunist line, which created conflict with a more feminist trend championed by the new National Organiser, Nina Brown. An incident where he called police to intervene at a fractious YCL meeting in Hackney proved controversial within the wider CPGB. In 1985, Chalmers moved to become the CPGB"s Scottish District Organiser. He stood for in Glasgow Govan at the 1987 United Kingdom general election, taking only 237 votes, then again at the Glasgow Govan by-election, 1988, where he increased his vote share to 0.9%.
He became the CPGB"s final Scottish Secretary in 1989.
In this role, he championed a Scottish Parliament and distanced the party from the collapsing regimes in Eastern Europe, while supporting perestroika. The party dissolved in 1991, and Chalmers became Scottish Convenor of its successor, Democratic Left.
He was critical of its decision in 1993 to become a pressure group, but remained convenor until it was dissolved in 1998. Chalmers next completed a Doctor of Philosophy in Economics at Glasgow Caledonian University, then became a lecturer at the university, specialising in the links between the Scottish Gaelic language and economic development.