Which electoral rule declares the candidate with the largest number of votes the winner without holding further runoff elections?

First-past-the-post voting

In this kind of election, the winner who gets most of votes wins the election. The first past the vote election system has an added advamtage of promoting stability. the winner often enters into a coalition with one of the competitors after the vote. However, it is agreed upon that the election leads to legitimacy concerns as the winner could be determined by a small part of the population, in case several competitors were involved.

no because it could make the world a terrible place to live in.