Musk has heavily advertised the giveaway, and said his offer is limited to registered voters in Arizona, Georgia, Michigan, Nevada, North Carolina, Pennsylvania and Wisconsin. America PAC so far has given out $1 million prizes to 16 people and said the final prize will be awarded Nov. 5.

Elon Musk, the world's richest person, has built a vast campaign machine in support of former President Donald Trump, including a multi-billion dollar door-knocking operation, a social media megaphone and a $1 million sweepstakes for battleground voters.