The structure of the Italian party system pushes the mainstream right and left to adopt different strategies on immigration in spite of a certain ideological and definite policy convergence. First, in a context of bipolar competition, the mainstream right prefers to cooperate, rather than compete, with the anti-immigrant radical right. Second, while the mainstream left dominates the centre-left coalition, the mainstream right has found itself subject to and torn by the populist tendencies of the centre-right coalition leader Silvio Berlusconi. The analysis shows that the mainstream left has endorsed concerns over security and border control, while remaining open to the social, cultural and (to a lesser extent) political integration of immigrants. In contrast, the mainstream right has appeared increasingly split between a component ‘contaminated’ by Berlusconi, which makes some concessions to the radical right; and a moderate component, which is more sensitive to liberal ideas and/or to the solidaristic remarks of the Catholic Church. The reality of the Italian welfare system and labour market would appear to create more favourable conditions for the ideological approach of the mainstream left. However, the mainstream right has benefited from its alliance with the radical right as it has constantly owned the immigration issue