Acclamation

Ac·cla·ma·tion

A shout of approbation, favor, or assent; eager expression of approval; loud applause.
On such a day, a holiday having been voted by acclamation, an ordinary walk would not satisfy the children.
— Southey.
A representation, in sculpture or on medals, of people expressing joy. (Antiq.)
In parliamentary usage, the act or method of voting orally and by groups rather than by ballot, esp. in elections; (R. C. Ch.)