In 1991 when the Soviet Union collapsed, the Eurocommunist-dominated leadership of the CPGB, led by Nina Temple, decided to disband the party, and establish Democratic Left, a left-leaning political think tank rather than a political party. Democratic Left itself dissolved in 1999, to be replaced by the New Politics Network, which in turn merged with Charter 88 in 2007. This merger formed Unlock Democracy, which was involved in the campaign for a yes vote in the 2011 Alternative Vote referendum.