The Diet may be out of session but a new battle is already underway at Liberal Democratic Party headquarters.

The power struggle has Prime Minister Shinzo Abe, Finance Minister Taro Aso and former trade minister Akira Amari standing in one corner and LDP Secretary-General Toshihiro Nikai in the other. Each side has eyes on the party’s leadership contest before a Lower House election in the fall.

The fight is manifesting itself in a number of recently formed parliamentary groups, with the two sides vying to install as many of their faction members as possible to LDP executive posts, and the position of secretary-general is the top prize.