kingmaker
Concise Oxford English Dictionary © 2008 Oxford University Press:
kingmaker/ˈkɪŋmeɪkə(r)/
▶noun a person who brings leaders to power through the exercise of political influence.
– origin used orig. with ref. to the Earl of Warwick (1428–71), known as Warwick the Kingmaker.
'kingmaker' also found in these Oxford entries:
