Elon Musk is giving $1 million away to a different Pennsylvania voter every day. It may not be legal.Ryan Collerd/AFP via Getty ImagesElon Musk is giving away $1 million each day to a voter who signs a petition.But there could be trouble, because you have to be a registered voter to participate.It's illegal to pay people to register to vote, and experts say this could cross that line.Elon Musk's latest gambit to help elect former President Donald Trump may be illegal, according to election law experts.The billionaire businessman announced at a rally in Harrisburg, PA on Saturday that he would award $1 million every day through his "America PAC" to a swing state voter who signs the super PAC's petition affirming support for freedom of speech and the right to bear arms.It's just the latest turn in Musk's growing involvement in the presidential race.