to take part in an election; to run for office

to compete; competition

to compete; to race; contest; competition; match; race

arena

rival; competitor

(slang) negative, toxic competition between women (esp. in seeking the favor and approval of men)

video gaming (as a sport); e-sports (abbr. for 電子競技|电子竞技[dian4 zi3 jing4 ji4])