The Nagano at-large district (長野県選挙区, Nagano-ken senkyo-ku) is a multi-member constituency of the House of Councillors in the Diet of Japan. It consists of Nagano Prefecture and elects four Councillors, two every three years by single non-transferable vote (SNTV) for six-year terms. The Councillors currently representing Nagano are: Like most two-member districts Nagano often splits seats between the major parties; in the first decades of the 1955 System, a Socialist candidate usually received the highest vote.