出马；参加竞选，作为候选人走上竞选之路

1. running (for election), coming forward as a candidate

noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru intransitive verb

出马(奔赴战场)

2. going on horseback (to a battle)

intransitive verb noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru historical term

亲自去：指亲自前往某地或亲自进行某项活动

3. going in person

intransitive verb noun or participle which takes the aux. verb suru noun (common) (futsuumeishi)

4. letting out a horse, taking out a horse

noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru archaic

夏の参議院議員選挙福岡選挙区への出馬を表明したのは、AIエンジニアの安野たかひろ氏が率いるチーム未来の新人で、ITエンジニアの古川アオイ氏(33歳)です。