party conference; party council
Refers to a formal meeting or deliberative body within a political party.
The new policy was discussed at the party conference.
party decision; party resolution
Refers to the outcome or binding decision made by a party body.
The lawmakers voted in accordance with the party decision.
The party's response to the bill was decided by party resolution.
It was decided to put the budget proposal before the party council.
党大会 refers to a large, often annual party convention, while 党議 covers smaller internal party meetings or councils and their decisions.
討議 (とうぎ) means a general discussion or debate, while 党議 (とうぎ) specifically refers to a political party's internal council or its official decision, so the identical pronunciation is a common trap for learners.
party whip; compulsory adherence to a party decision; restrictions on party debate
Compound of 党 (party) and 議 (deliberation, conference).