The brief détente between Elon Musk and President Donald Trump took its last breath over the weekend, as the billionaire and once top Republican donor announced he would form a new political party.

If Musk is able to pry away Republican votes in a few hotly contested districts, he could undermine GOP control of Congress and make it harder for President Donald Trump to pull off his agenda. Musk’s new party could even spend its way into a few congressional seats.

President Donald Trump and Tesla CEO Elon Musk have clashed publicly over Trump's “Big Beautiful Bill,” which notably excluded electric vehicle tax credits. Musk criticized the omission, calling it “political suicide” for Republicans and warning it could have harmed the U.