History. In words: each time the 60 days ran past the planned end of the session (2007, 2008, 2009), the government extended the session one or two days before its end, by 31, 25 and 55 days.
Hunch. On 7 November the opposition, which holds the upper chamber committee 20 to 19, asked for a longer debate than the 33 hours in the lower chamber, which pushes a final vote past 12 December.
The session market resolves on the House of Representatives table of sessions: YES if by 12 December 2026, Japan time, parliament extends the current session for any length and any reason. If the session ends on 12 December it resolves NO, and Kyodo News and The Japan Times are the backups.
We looked for cases where Japan's lower chamber passed a government bill that the opposition voted against, while the opposition had a majority in the upper chamber and the government had two-thirds of the lower chamber. We found eight such votes, from 2007 to 2009 and in 2013. Some covered several laws decided on the same day. (House of Councillors; National Diet Library)