🏛️ Politics · Next Week

Japan's ruling coalition (LDP + Komeito) loses its absolute majority in the Sangiin (Upper House) in the July 20, 2026 election

Hit ✦ AI-generated prediction Published on 15. July 2026 · Predicted for 20. July 2026 · Based on: Historical Cycle

Probability

62%

In the July 20, 2026 Sangiin election, 125 of 248 seats are up for grabs; 123 seats remain as holdovers. The LDP-Komeito coalition needs at least 125 total seats for an absolute majority. Pre-election polls (NHK/Nikkei, July 2026) show the LDP well below its historical highs. Early projections indicate LDP winning approx. 39 seats (+Komeito approx. 8) in the new elections; combined with approx. 75 holdover seats, that yields approx. 122 coalition seats – three short of the majority threshold. Main voter concerns: inflation, social security, pension reform. Coalition majority is a distinct question from the open predictions (LDP alone ≥60 seats / DPFP ≥15 seats). Calibrated at 62% based on polling data and early projections.

Data basis for this prediction

CSIS-Analyse: Japans Oberhauswahl 2026 – Koalition unter Druck; Prolonged Instability erwartet (CSIS, Juli 2026)
Nippon.com: LDP-Koalition verliert Mehrheit im Oberhaus – Projektion ~122 Sitze (Stand 20.07.2026)
NHK/Nikkei-Vorwahlumfrage: LDP erwartet 35–45 Sitze von 125 zu vergebenden Mandaten (Juli 2026)
Voter Turnout 2026: 58,5 % (+6,5 Pkt. vs. 2022), Inflationsprotesteffekt sichtbar (Wikipedia, 2026)

Verdict: Hit

[Vorzeitig entschieden] LDP+Komeito-Koalition hält 122 Gesamtsitze – absolute Mehrheit (125) verfehlt. Quelle: Wikipedia – 2025 Japanese House of Councillors election; East Asia Forum

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