A group or faction that supports reform — people who aim to change the status quo in politics or organizations (opposed to conservatives).
党内の改革派は若手の登用を強く主張している。
The reformist faction within the party strongly advocates appointing younger people.
企業の改革派は業務の効率化と新サービスの導入を進めた。
The reformist group in the company promoted operational efficiency and the introduction of new services.
選挙では改革派と保守派の対立が大きな争点になった。
In the election, the conflict between reformists and conservatives became a major issue.