A member of a legislative assembly (e.g., a member of the Diet, parliament, or congress).
新しい議員が先週議会で初めて発言した。
A new assembly member spoke for the first time in the legislature last week.
その議員は地域の問題に熱心に取り組んでいる。
That member is actively working on local issues.
国会議員は国民を代表して法律を審議する役割がある。
Diet members have the role of deliberating laws on behalf of the people.