Prime Minister Junichiro Koizumi and New Komeito leader Takenori Kanzaki signed a new policy agreement Tuesday in preparation of kicking off their two-party ruling coalition led by the Liberal Democratic Party in the special Diet session that starts Wednesday.

During the brief Diet session, Koizumi, president of the LDP, is certain to be re-elected prime minister as the ruling alliance retained a stable majority in the 480-seat House of Representatives in the Nov. 9 general election.

The New Conservative Party, the third member of the LDP-led alliance, has agreed to be absorbed by the LDP following its election setback and will officially disband as a party Friday.