President Donald Trump has roughly three years left in his second term to advance his bold agenda for a stronger America. Yet the 2026 midterms will largely determine his governing power, and a federal court just handed Democrats a huge advantage that puts Trump’s legacy in jeopardy.

Trump benefits from Republican control of both chambers of Congress. Even with a razor-thin majority in the House and an obstinate GOP, he knows he isn’t going to face the all-out war against his agenda that would come with Democratic control. However, this window is fleeting. The 2026 midterms, with the new congressional map at play, now represent an existential threat to sustained GOP control.