In the middle of his Butler, Pennsylvania rally Saturday, former President Trump called up one of his most powerful allies — Elon Musk, CEO of Tesla and SpaceX, and owner of X. Why it matters: This was Musk's first time at a Trump rally since the night of the shooting,

Get everyone you know, and everyone you don't know, drag them to register to vote,” said Elon Musk at a rally in Butler, Pennsylvania. “If they don’t, this will be the last election. That’s my prediction.

Right-wing tech billionaire Elon Musk erupted on stage at Donald Trump's Pennsylvania campaign rally Saturday night, jumped up and down and touted a new "Dark MAGA" in a wildly physical presentation. "Fight, fight, fight!" roared Musk, sporting a T-shirt reading: "Occupy Mars."