Key Facts
• July 5-6: Special survey conducted for the 27th House of Councillors election.
• 125 seats contested, including 74 district and 50 proportional representation seats.
• Ruling coalition (Liberal Democratic Party and Komeito) struggles to secure 50 seats for majority.
• Liberal Democratic Party projected to win 32–46 seats, down from 2022’s 40+ seats.
• Komeito likely to secure 10 seats, below its current 14 seats.
• 40–50% of voters remain undecided, potentially shifting election outcomes.
• Constitutional Democratic Party expected to exceed its 22-seat target.
• Japan Innovation Party stagnates, aiming for 3–4 proportional seats.
• Democratic Party for the People and Sanseito show strong momentum, with 6–7 proportional seats each.
• Reiwa Shinsengumi projected to win 3–4 proportional seats, with potential gains in Tokyo.
• Japanese Communist Party likely to secure 3–4 seats, including Tokyo.
• Social Democratic Party and Japan Conservative Party may gain 1–2 proportional seats each.
• Survey conducted via internet polling with 55,430 valid responses from a pool of 7,400,000 adults.
Summary
A recent survey by Mainichi Shimbun and TBS/JNN highlights a challenging landscape for Japan’s ruling coalition ahead of the July 20 House of Councillors election. The Liberal Democratic Party and Komeito are struggling to secure the 50 seats needed to maintain their majority, with projections indicating a decline in their overall seat count. Meanwhile, opposition parties, including the Constitutional Democratic Party, Democratic Party for the People, and Sanseito, are gaining momentum. Notably, 40–50% of voters remain undecided, leaving room for significant shifts before election day. The survey, conducted via internet polling, reflects a competitive race with potential implications for Japan’s political balance.
