選 — elect, select, choose, prefer

守衛新選組隊長。

He was the commander of Shuei Shinsengumi (the Shinsengumi unit to guard Toshizo HIJIKATA at the Hakodate war).

選手せんしゅの 入場にゅうじょうです。

The athletes will march in.

参議院議員に当選。

He was elected as a member of the House of Councilors of the Diet.