Elon Musk raises payment offer to $100 for voters who sign pro-gun and pro-free-speech petition NBC NewsHow Elon Musk became Trump’s biggest supporter CNNExclusive: Pro-Trump group funded by Musk struggles with outreach targets, inflation of doorknocking figures ReutersOn the Campaign Trail With Elon Musk: Offering Young Men an American Dream The Wall Street JournalRepublicans Tell Trump That Elon Musk’s Super PAC Is Blowing It Rolling Stone