Shinzo Abe confirmed today he would run in his ruling party's leadership election, putting him on track to become Japan's longest-serving premier and bolstering his dream of reforming the constitution.

Abe is expected to be re-elected head of the conservative Liberal Democratic Party (LDP) easily, with the vast majority of lawmakers behind him and only one challenger, former defence minister Shigeru Ishiba. "I have decided to lead Japan as the LDP leader and the prime minister for three more years, and with this determination, I will run for the leadership election next month," Abe told reporters in a televised news conference.