Japan's main opposition Constitutional Democratic Party has approved a new leadership lineup proposed by its newly elected President Noda Yoshihiko.

Noda, a former prime minister, was chosen as party leader on Monday.

On Tuesday, Noda presented his selection of key party appointments to party lawmakers from both chambers of the Diet.

They approved the appointment of Ogawa Junya as Secretary-General, Shigetoku Kazuhiko as Chairperson of the Policy Research Committee and Ryu Hirofumi as Chairperson of the Diet Affairs Committee.

Oogushi Hiroshi will stay on as Chairperson of the Election Strategy Committee.

Oogushi will also serve as Executive Deputy President.

Nagatsuma Akira, a new appointee, and Tsujimoto Kiyomi, who retains her post, will serve as the other two Executive Deputy Presidents.

Noda plans to rush preparations for a general election, as he assumes the Lower House could be dissolved soon after the main ruling Liberal Democratic Party chooses its new president on Friday.