The cabinet exercises most executive powers, and originates most of the bills that the parliament then debates and votes on. It is headed by the Prime Minister of Finland, and consists of him or her, of other ministers, and of the Chancellor of Justice. The current prime minister is Sanna Marin (Social Democratic Party). Each minister heads his or her ministry, or, in some cases, has responsibility for a subset of a ministry's policy. After the prime minister, the most powerful minister is the minister of finance. The incumbent Minister of Finance is Matti Vanhanen.