As Donald Trump's grip on the Republican Party weakens after the midterm setback, a battle for the future of MAGA is beginning, says Eurasia Group's Pramit Pal Chaudhuri. With isolationists led by figures like JD Vance potentially gaining the upper hand, the influence of tech-libertarian voices such as Elon Musk and Peter Thiel could diminish. But even as factions compete for control, one theme is likely to endure: economic nationalism, driven by a push to rebuild American manufacturing and bring supply chains back home. The big question now is who inherits Trump's movement and what shape a post-Trump Republican Party will take.