Japan's opposition parties jointly submitted a no-confidence motion against the Cabinet of Prime Minister Shinzo Abe on Friday morning. The motion will be put to a vote in a Lower House plenary session in the afternoon and is expected to be voted down.
The opposition camp submitted the motion amid a showdown between the governing and opposition parties before the current session of the Diet ends on Sunday.
One focus is a bill to allow the opening of integrated resorts that include casinos.
The governing parties plan to enact the legislation by putting it to a vote at an Upper House plenary session on Friday evening after voting down the no-confidence motion in the Lower House.
The opposition camp says it is unforgivable that Abe's Cabinet failed to make sufficient efforts to respond to the recent flooding disaster and instead debated bills that did not require urgent attention.
The president of the Constitutional Democratic Party, Yukio Edano, will explain the motion in the Lower House plenary session.
He will also take up allegations of favoritism and other issues to press the Abe Cabinet to resign.
The governing parties plan to vote down the no-confidence motion, saying the creation of a political vacuum would harm efforts to effectively deal with the disaster.