History. 8 of 8: every law like this became law by day 63 after reaching the upper chamber, each time by a second vote of two-thirds in the lower chamber. 8 January 2027 is day 63 after 6 November.
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 any final vote close to the New Year.
The 8 January market resolves on the House of Councillors record of the food tax bill: YES if by 8 January 2027, Japan time, the bill is finally passed by any route. If the session ended without a law, or the vote has not come yet, 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)