With Donald Trump’s presidency win, the stage is set for one of his most prolific backers—the world’s wealthiest person, Elon Musk—to wield his newfound political influence, and while it’s a mystery what role he may play in the administration, Musk has laid out several priorities.

The candidate largely let the billionaire run his $175 million ground game — a gamble that future candidates could look to emulate.

Elon Musk played a video game on his private jet as it hurtled toward Palm Beach, Florida, where he was due to watch election results with former president Donald Trump. As aircraft engines whirred in the background, the CEO of Tesla and SpaceX told ...