Elon Musk spent another $10 million to keep the GOP in control of Congress

Elon Musk and Shivon Zilis at Mar-a-Lago on Sunday.

Saul Loeb / AFP via Getty Images

• Elon Musk is returning to his role as one of the GOP's most important megadonors.
• He gave $5 million apiece in December to two super PACs for GOP House and Senate candidates.
• He's also pumped another $2.9 million into his personal super PAC since August.

Elon Musk is spending big to help the GOP win the midterms.

The world's richest man gave $5 million apiece in December...