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,

Mr. Musk, the world’s richest man and the leader of Tesla and X, endorsed the former president after the attempted assassination in July. On Saturday, he returned to the scene and made a spirited rally appearance.

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.