DictionarykingmakerInfluential chooser of a leader
noun

kingmaker

KING-may-ker/ˈkɪŋmeɪkər/

A powerful person who helps determine who becomes a leader without taking the role.

The retired governor remains a kingmaker, deciding which candidate wins support.

Adviser decisively places final voting token into candidate's transparent ballot bowl, making his pile exceed rival empty podium's pile; candidate receives symbolic leadership badge, no party signs or text.
Etymology

A kingmaker “makes” kings by helping put them in power. The name originally referred to the Earl of Warwick’s role in elevating and restoring monarchs; the selected sense extends that role to leaders generally.

In context

The Free Press27:30
when the labor movement was a real kingmaker
Confessions of a Former DSA Organizer

More examples

  • Neither candidate can win without the support of the local kingmaker.
  • The billionaire acts as a kingmaker by funding his preferred candidate.
  • Several longtime board members are kingmakers in the search for a CEO.

Forms

kingmaker · kingmakers

kingmaking noun — The exercise of influence in choosing leaders.

Similar words

power broker
Arranges political deals but does not necessarily determine leadership.
backer
Supports a candidate but may not control the outcome.