noun
succession struggle; succession race
Refers to a contest or conflict among candidates to become the next leader, heir, or successor in an organization, family, or political context.
社長の引退後、後継者争いが激しくなった。
After the president retired, the succession struggle intensified.
彼は後継者争いに敗れて会社を去った。
He lost the succession race and left the company.
Compound of 後継者 (successor) + 争い (struggle, dispute).