explain the imbalance that existed in electoral districts prior to redrawing districts in 1964? what phrase did the supreme court use in the case of reynold v. sims to explain why courts could force states to redraw voting districts?

An imbalance existed in electoral districts prior to redrawing districts in 1964.

Explanation:

Redrawing of districts was done by the court in 1964 in order to maintain equality. Prior to this the electoral districts were not formed by considering the population. The populations of the electoral districts were unequal.

The court found out that the apportionment scheme that existed in several states like Alabama was unconstitutional.

The court ruled that "because the right to vote is so fundamental to securing protection from the laws, the clause inevitably guarantees the opportunity of equal participation by all voters in the election of state legislatures.