the same party; the party in question
Refers to a political party previously mentioned or understood from context. Common in news reports.
同党の候補者は選挙で勝利した。
The candidate from the same party won the election.
The party announced a new policy next month.
the said party; that party
Used anaphorically to refer back to a political party already mentioned, similar to 'the aforementioned party'.
同党は新たな政策を発表した。
The said party announced a new policy.
A lawmaker from the (same) party held a press conference.
A conflict of opinion is occurring within the party.
Compound of 同 (same) and 党 (party).