The Supreme Court unanimously ruled Monday that a state or locality is allowed to draw its legislative districts based on total population alone.

The court issued a unanimous decision in Evenwel v. Abbott, a case challenging the 2013 redistricting of 31 seats in the Texas Senate based solely on 2010 census population figures.

The ruling affirms the 5th U.S. Circuit Court of Appeal’s decision, which sided with Texas. The state argued there was no legal basis for voters Sue Evenwel and Edward Pfenninger’s claims that the new election districts were unconstitutional, violating the “one person, one vote” principle of the 14th Amendment’s Equal Protection Clause, because the districts were not divided in a manner that equalized both total population and voter population.

“This Court’s past decisions reinforce the conclusion that States and localities may comply with the one-person, one-vote principle by designing districts with equal total populations,” Justice Ruth Bader Ginsburg wrote in the majority opinion.

Ginsburg argued that requiring districts to be divided by voter-eligible population figures would upset what she called a “well-functioning approach to districting that all 50 states and countless jurisdictions have followed.” … read more here at The Hill