2019 Okinawa 3rd district by-election

A by-election for the Okinawa 3rd district in the Japanese House of Representatives was held on 21 April 2019.[1] The seat became vacant following the candidacy and election of its representative, Denny Tamaki to the governorship of Okinawa Prefecture. Tamaki was one of the two representatives from the Liberal Party in the House. He had served the district almost continuously since 2009 and defended the seat by a 17.56% margin in the 2017 election. The by-election was held on the same day with the second round of the unified local elections and another House by-election in the Osaka 12th district. The Okinawa-wide referendum in February influenced the by-election campaign.

2019 Okinawa 3rd district by-election

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Okinawa 3rd district
Aiko Shimajiri (3x4 crop).jpg
Candidate Tomohiro Yara Aiko Shimajiri
Party Independent Liberal Democratic
Popular vote 77,156 59,428
Percentage 56.49% 43.51%

Representative before election

Denny Tamaki

Elected Representative

Tomohiro Yara[note 1]

The candidate supported by Tamaki and the All-Okinawa coalition, Tomohiro Yara won the by-election against LDP candidate and former minister Aiko Shimajiri.[2]




House of Representatives: 2019 Okinawa 3rd district by-election
Party Candidate Votes % ±%
Independent Tomohiro Yara 77,156 56.5
Liberal Democratic Aiko Shimajiri 59,428 43.5
Total votes 136,584
Turnout 43.99 -10.06
Independent gain from Liberal Swing


  1. ^ Yara joined the Liberal caucus soon after he was elected.


  1. ^ "EDITORIAL: Henoko base row now much more than just a local political issue". Asahi Shimbun. 15 December 2018. Retrieved 21 January 2019.
  2. ^ "LDP loses both by-elections in Okinawa, Osaka prefectures". Asahi Shimbun. 22 April 2019. Retrieved 23 April 2019.
  3. ^ a b "屋良・島尻氏一騎打ちへ 衆院沖縄3区補選 「オール沖縄」対自民" (in Japanese). Okinawa Times. 28 December 2018. Retrieved 22 February 2019.