Solar advocates are asking Florida's high court to halt voting on Amendment 1, a ballot measure they argue is misleading.
The legal challenge was filed Wednesday with the Florida Supreme Court.
It comes after a leading proponent of Amendment 1 was recorded saying that the measure was written to appear pro-solar, even though it could end up restricting solar growth in Florida by raising costs.
Solar advocates are also asking the court to revisit its previous ruling, which found that Amendment 1's language was not misleading.
Sarah Bascom, spokeswoman for a utility-funded group that supports the amendment, called the legal challenge "political grandstanding" and said the amendment will protect consumers.
Amendment 1 seeks to change the state constitution to say consumers shouldn't "subsidize" solar growth.