Ibaraki at-large districtThe Ibaraki at-large district is a constituency that represents Ibaraki Prefecture in the House of Councillors in the Diet of Japan. It has four Councillors in the 242-member house.OutlineThe constituency represents the entire population of Ibaraki Prefecture. The district elects four Councillors to six-year terms, two each at alternating elections held every three years. The district has 2,411,307 registered voters as of September 2015. The Councillors currently representing Ibaraki are: Akira Gunji Hiroshi Okada Yukihisa Fujita Ryosuke Kouzuki