Key Facts
• October 21, 2025: Sanae Takaichi elected as Japan’s first female prime minister.
• Controversy arose during the prime ministerial vote involving Sayaka Kobayashi of the Democratic Party for the People (DPP).
• Kobayashi voted for Takaichi, defying the DPP’s directive to cast a symbolic invalid vote for party leader Yuichiro Tamaki.
• Kobayashi received a “strict warning” from the DPP for her actions.
• Public criticism targeted the DPP’s policy of encouraging invalid votes, questioning its logic and ethics.
• Online reactions included calls for respecting individual lawmakers’ opinions and criticism of Tamaki’s leadership.
• Tamaki has faced scrutiny for missing opportunities to strengthen his party’s position, including declining to challenge Takaichi as a prime ministerial candidate.
• Takaichi’s policies, such as “responsible proactive fiscal measures,” have garnered public support.
• The DPP’s future as an opposition party remains uncertain amid internal and external criticism.
Summary
The election of Sanae Takaichi as Japan’s first female prime minister on October 21, 2025, sparked controversy within the Democratic Party for the People (DPP). Sayaka Kobayashi, a DPP lawmaker, defied party orders by voting for Takaichi instead of casting an invalid vote for party leader Yuichiro Tamaki. This led to a “strict warning” from the DPP, drawing widespread public criticism of the party’s policy and Tamaki’s leadership. Critics questioned the rationale behind encouraging invalid votes and highlighted Tamaki’s missed opportunities to strengthen his party’s position. Meanwhile, Takaichi’s policies have gained public support, leaving the DPP’s future as an opposition party uncertain.
