Democrat Adlai Stevenson served as governor in 1948–1952. William G. Stratton led a Republican statehouse in the 1950s. In 1960 Otto Kerner Jr. led the Democrats back to power. He promoted economic development, education, mental health services, and equal access to jobs and housing. In a federal trial in 1973, Kerner was convicted on 17 counts of bribery while he was governor, plus other charges; he went to prison. Richard B. Ogilvie, a Republican, won in 1968. Bolstered by large Republican majorities in the state house, Ogilvie embarked upon a major modernization of state government. He successfully advocated for a state constitutional convention, increased social spending, and secured Illinois' first state income tax. The latter was particularly unpopular with the electorate, and the modest Ogilvie lost a close election to the flashy Democrat Dan Walker in 1972.