Kuroda was elected governor of Osaka Prefecture in 1971, supported by the Japan Socialist Party and the Japanese Communist Party. In 1975, he became the first governor who won reelection with backing only from the Japanese Communist Party. He unsuccessfully ran for a third term in 1979.
黒田了一氏死去 元大阪府知事. 47 News (in Japanese). Press Net Japan. Kyodo. 28 July 2003. Retrieved 28 April 2009.
^ abIshikawa, Motoya (1 November 2003). "黒田了一さんを悼む". 自由法曹団通信 (in Japanese). 1109. Tokyo: Japan Lawyers Association for Freedom. Archived from the original on 8 May 2009. Retrieved 28 April 2009.