Sorsa's fourth cabinet was the 63rd government of Finland, which existed for 1 456 days, from 6 May 1983 to 30 April 1987. The governmentâÂÂs Prime Minister was Kalevi Sorsa. It was a majority government based on the âÂÂred-soil governmentâ model (Finnish: punamultahallitus), as it was a coalition formed by the Social Democrats, the Centre Party, the Swedish PeopleâÂÂs Party, and the Rural Party.