Elon Musk’s $1 million giveaway for voters who sign his free-speech and gun-rights petition falls into a gray area of election law, and legal experts are divided about whether the billionaire supporter of Donald Trump could be running afoul of prohibitions on paying people to register to vote.

Legal experts seem divided on whether the Tesla CEO’s promise to award huge prizes to voters who sign a petition runs afoul of election law.

The potential issue stems from the fact that giveaway participants must be registered voters: It's illegal to pay people to register to vote.