The Liberal Democratic Party, the Japan Innovation Party (JIP) and the Democratic Party for the People (DPP) approved a plan Thursday to cut 31 Lower House proportional representation seats, ending a standoff between the ruling coalition and opposition party over how many seats would be cut.

“As a result of including our party’s opinions, we reached an agreement,” opposition DPP Secretary-General Kazuya Shimba told reporters the same day.

Having secured a parliamentary majority, the three parties plan to introduce and pass a related bill by the end of the current session, which is scheduled to end Dec.…