Musk offers voters $1 million a day to sign PAC petition backing the Constitution. Is that legal?

Elon Musk is pledging to give away $1 million a day to voters for signing his political action committee’s petition backing the Constitution. The giveaway by the Donald Trump supporter is raising questions and alarms among some election experts who say it's a violation of the law to link a cash handout to signing a petition that also requires a person to be registered to vote.