Updated, Feb. 27, 2019: Toledo voters on Tuesday approved a ballot question asking whether Lake Erie should be given rights normally associated with a person. The measure got 61 percent of the votes. On Wednesday, a federal lawsuit was filed by a farmer challenging the measure’s constitutionality.

The failing health of Lake Erie, the world’s 11th largest lake, is at the heart of one of the most unusual questions to appear on an American ballot: Should a body of water be given rights normally associated with those granted to a person?

Voters in Toledo, Ohio, will be asked this month to decide whether Lake Erie, which supports the economies of four states, one Canadian province and the cities of Toledo, Cleveland and Buffalo, has the legal right “to exist, flourish, and naturally evolve.”

The peculiar ballot question comes amid a string of environmental calamities at the lake — poisonous algal blooms in summer, runoff containing fertilizer and animal manure, and a constant threat from invasive fish. But this special election is not merely symbolic. It is legal strategy: If the lake gets legal rights, the theory goes, people can sue polluters on its behalf.