Refers to the political ideology or system of a republic, where sovereignty rests with the people and their elected representatives, as opposed to monarchy.
共和政は君主制と対立する政治思想だ。
Republicanism is a political ideology opposed to monarchy.
彼は共和政の理念を熱心に支持している。
He ardently supports the ideals of republicanism.
Monarchy, the system where a monarch is the head of state, often contrasted with republicanism.
共和政 is republican government headed by elected leaders, the direct opposite of 帝政's rule by an emperor.
Second Republic (France)
Compound of 共和 (kyōwa, 'republican cooperation') + 政 (sei, 'government, political system'). The term was coined in the Meiji period to translate Western political concepts.