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Junichiro Koizumi is a retired Japanese politician who served as Prime Minister of Japan from 2001 to 2006. He also held the position of president of the Liberal Democratic Party (LDP) during his time in office. Koizumi is recognized as the sixth-longest serving Prime Minister in Japanese history. He retired from politics in 2009, leaving behind a legacy of economic and social reforms.

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Career Timeline

1972D$0.5M

Elected to Parliament

Koizumi was first elected to Japan's House of Representatives, beginning his political career. He was a relatively unknown politician at this early stage.

2001B▲▲$3M+$2.5M

Becomes Prime Minister

Koizumi was elected as Japan's Prime Minister and president of the LDP. His reformist agenda and charismatic style quickly made him popular domestically and raised his international profile.

2003A$5M+$2M

Postal Privatization Battle

Koizumi's push to privatize Japan Post became a defining political battle, showcasing his reformist credentials. His high approval ratings made him one of Japan's most recognizable prime ministers in decades.

2005A$7M+$2M

Landslide Re-election Victory

Koizumi won a historic landslide election victory after dissolving parliament over postal reform. This was the peak of his political power and popularity, making him well-known internationally.

2006B$8M+$1M

Retirement from Leadership

Koizumi stepped down as prime minister after five years in office, as planned. While still respected, his political influence began to wane with his departure from leadership.

2009C$9M+$1M

Retirement from Politics

Koizumi retired from politics entirely, ending his nearly four-decade parliamentary career. His public relevance declined significantly, though he remained respected in Japan.

2015C$9.5M+$0.5M

Anti-Nuclear Activism

Koizumi became an activist against nuclear power following the Fukushima disaster. This kept him somewhat in the public eye but primarily in Japan and political circles.

2026C$10M+$0.5M

Retired Statesman

At 83, Koizumi is remembered as an influential reformist prime minister in Japan but has limited recognition outside Asia. He maintains moderate fame among those familiar with Japanese politics but has largely faded from mainstream consciousness.

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Last updated: February 23, 2026