The decline in confidence in the traditional parties in Western Europe has manifested itself through the emergence of the Green parties on the Left and populist parties on the Right. Despite successes in some countries, these parties have remained small, although they have been able, respectively, to play on the growth of ‘post-materialist’ values on the Left, and of anti-immigrant sentiments on the Right. The prospects for these parties are not very good, in particular for the right-wing populist parties, which are highly dependent on the popularity of their leaders, and even for the Green parties, although these can exploit the internal divisions within Socialist parties between supporters of the ‘traditional’ Left and supporters of the ‘New’ Left.