As the LDP holds a governing coalition in parliament, winning its leadership essentially secures the top job.

Ishiba, known for his expertise in defense policy, won a competitive race against Economic Security Minister Sanae Takaichi, who had aimed to be Japan’s first female prime minister. His centrist stance may have been a decisive factor, as the LDP faces challenges from liberal opposition and battles declining popularity due to recent scandals under outgoing Prime Minister Fumio Kishida.

With a longstanding political career, Ishiba has served in various key cabinet roles since entering parliament in 1986. Though he has been a prominent figure in the LDP, he has faced skepticism from conservatives, especially for supporting reforms aimed at gender equality and same-sex marriage.

Ishiba’s vision for Japan includes a stronger security alliance with the U.S., potential NATO-style defense cooperation in Asia, and a focus on disaster management in one of the world’s most disaster-prone countries.

Japan may soon face a general election as he prepares to assume leadership. However, Ishiba’s ability to lead effectively will be tested, especially as political experts warn of potential instability reminiscent of Japan’s “revolving door” leadership in the early 2000s.