A DPJ win would mean 62-year-old party chief Yukio Hatoyama is set to become the next prime minister.

The DPJ vowed to cut wasteful spending and revitalise the world's second-largest economy by increasing household incomes and encouraging spending. However, it has offered little detail on how it would fulfill its promises.

Hatoyama said he plans to review the current government's record-high stimulus package. His party's manifesto promises to raise monthly child allowances for children and to scrap both expressway tolls and gasoline taxes as part of its plan to stimulate consumer spending.