The document discusses political support for social security systems and reforms from defined benefit (DB) to funded defined contribution (FDC) plans. It reviews literature on three factors influencing political support: 1) existence of intergenerational transfers, 2) size of transfers, and 3) political economy of social contracts. The literature concludes social security becomes politically stable if initially feasible. The document then models a pension reform from DB to a hybrid DB-FDC system in Poland, examining the distribution of costs and gains and whether the FDC pillar becomes politically stable over time through majority voting.