Question

why do we need elections

Answer 1

Elections are a democratic way of selecting representatives.
They ensure that the representatives rule as per the wishes of the people.
Elections help voters to choose representatives who will make laws for them, form the
government and take major decisions.
The voters can choose the party whose policies will guide the government and law
making.
Thus election is a mechanism by which people can choose their representatives at
regular intervals and change them if they wish to.

Answer 2

we need elections because then only we can chose the person as the leader