Japan may be on the verge of a historic political shift as the ruling Liberal Democratic Party (LDP) prepares to choose a new leader this Saturday. The outcome could see the nation electing its first female prime minister, Sanae Takaichi, 64, or its youngest modern-era leader, Shinjiro Koizumi, 44. The LDP election comes after Prime Minister Shigeru Ishiba announced his resignation following multiple electoral defeats. Takaichi, a close ally of the late Prime Minister Shinzo Abe, is running on an aggressive economic platform. Koizumi, the son of former Prime Minister Junichiro Koizumi, presents a more moderate approach.