In their second debate in the Diet on Wednesday, Prime Minister Taro Aso and the Democratic Party of Japan leader Yukio Hatoyama managed to talk in more concrete terms than they did the first time. Important issues for the coming Lower House election appear to have emerged.

Mr. Aso tried to show that the DPJ does not have a solid policy to secure funds to implement social welfare measures. By so doing, he apparently wanted to leave the impression that the DPJ will be unreliable if it comes to power. He explained that the Liberal Democratic Party-Komeito coalition will carry out drastic tax reform, including raising the consumption tax, within three years if the economy has recovered.

Mr. Hatoyama said the DPJ will not raise the consumption tax in the first four years. Dividing the government's total budget of some ¥210 trillion into several large categories such as personnel and facility construction costs, he said the party can raise about ¥10 trillion by axing wasteful spending, postponing nonessential projects and abolishing discretionary contracts. He said the ruling coalition cannot ax wasteful spending since it relies on the bureaucracy for crafting policies.

The DPJ leader needs to give concrete examples of nonessential projects and wasteful use of tax money to increase the party's credibility. He also should explain how drastic changes in the budget are possible.

He accused the government of adopting "bureaucracy-led" policies and mentioned the doctor shortage, the roughly 100 suicides daily in March and April and the abolition of special allowances for mother-child households on welfare. He called for "politics that values life." Mr. Aso's rebuttal did not seem strong.

Mr. Hatoyama criticized Mr. Aso for deciding to retain Mr. Yoshifumi Nishikawa as president of Japan Post Holdings Co. A review of the merits of postal service privatization will certainly be an issue in the coming election.

The 45-minute debate time is too short and should be lengthened. Leaders of minor parties should also be allowed to weigh in against the prime minister.