noun
ruling coalition
Refers to a coalition of political parties that forms the government. Common in political news contexts.
与党連立は新しい政策を発表した。
The ruling coalition announced a new policy.
連立政権 is a coalition government, while 与党連立 specifically refers to the ruling coalition of parties.
Compound of 与党 (yotō, 'ruling party') and 連立 (renritsu, 'coalition').