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Japanese House of Councillors election, 2016

Japanese House of Councillors election, 2016
Japan
2013 ←
10 July 2016 → 2019

121 (of the 242) seats in the House of Councillors
  First party Second party
  Shinzō Abe.jpg Katsuya Okada (2010).jpg
Leader Shinzō Abe Katsuya Okada
Party Liberal Democratic Democratic
Leader since 26 September 2012 14 December 2014
Last election 115 seats
42.74% (Prefectural)
34.68% (National)
New party
Seats before 115 seats 60 seats
Seats after 121 49
Seat change Increase 6 Decrease 11
Popular vote 20,114,833 (PR) 11,751,009 (PR)
Percentage 35.9% (PR) 21.0% (PR)

  Third party Fourth party
  Natsuo Yamaguchi 201404.jpg Kazuo Shii cropped.jpg
Leader Natsuo Yamaguchi Kazuo Shii
Party Komeito Communist
Leader since 8 September 2009 24 November 2000
Last election 20 seats
5.10% (Prefectural)
14.20% (National)
11 seats
10.60% (Prefectural)
9.70% (National)
Seats before 20 seats 11 seats
Seats after 25 14
Seat change Increase 5 Increase 3
Popular vote 7,572,973 (PR) 6,016,245 (PR)
Percentage 13.5% (PR) 10.7% (PR)

The 24th regular election of members of the House of Councillors (dai-nijūyon-kai Sangiin giin tsūjō senkyo, 第24回参議院議員通常選挙) was held on Sunday 10 July 2016 to elect 121 of the 242 members of the House of Councillors, the upper house of the 717-member bicameral National Diet of Japan, for a term of six years. As a result of the election, the LDP/Komeito coalition gained ten seats for a total of 146 (60.3% of all seats in the house), the largest coalition achieved since the size of the house was set at 242 seats.

76 members were elected by single non-transferable vote (SNTV)/First-past-the-post (FPTP) voting in 45 multi- and single-member prefectural electoral districts; for the first time, there were two combined (gōku) single-member districts consisting of two prefectures each, Tottori-Shimane and Tokushima-Kōchi. This change and several other reapportionments were part of an electoral reform law passed by the Diet in July 2015 designed to reduce the maximum ratio of malapportionment in the House of Councillors below 3. The nationwide district which elects 48 members by D'Hondt proportional representation with most open lists remained unchanged.

This election was the first national election since the 2015 change to the Public Offices Election Act allowed minors from 18 years of age to vote in national, prefectural and municipal elections and in referendums.

The term of members elected in the 2010 regular election (including those elected in subsequent by-elections or as runners-up) ends on July 25, 2016. Under the "Public Offices Election Act" (kōshoku-senkyo-hō), the regular election must be held within 30 days before that date, or under certain conditions if the Diet is in session or scheduled to open at that time, between 24 and 30 days after the closure of the session and thus potentially somewhat after the actual end of term. The election date was July 10 with the deadline for nominations and the start of legal campaigning 18 days before the election (i.e. June 22).


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