Yamagata at-large district

The Yamagata at-large district (山形県選挙区) is a constituency that represents Yamagata Prefecture in the House of Councillors in the Diet of Japan. Councillors are elected to the house by single non-transferable vote (SNTV) for six-year terms. Since the establishment of the current House of Councillors electoral system in 1947, the district has elected two Councillors, one each at elections held every three years. It has 937,920 registered voters as of September 2015.