Ishikawa at-large districtThe Ishikawa at-large district is a constituency that represents Ishikawa Prefecture in the House of Councillors in the Diet of Japan. It has two Councillors in the 242-member house.OutlineThe constituency represents the entire population of Ishikawa Prefecture. The district elects two Councillors to six-year terms, one at alternating elections held every three years. The district has 939,531 registered voters as of September 2015. The Councillors currently representing Ishikawa are: Naoki Okada Syuji Yamada