Billionaire Republican megadonor Ken Griffin said Democrats are all but guaranteed to retake the House of Representatives in the 2026 midterm elections, citing voter frustration over inflation and rising consumer costs. Midterm elections Ken Griffin blamed voter frustration over inflation and rising living costs for Republican political troubles. By: Unsplash Griffin, the founder of Citadel, made the comments during an interview with CNBC anchor Sara Eisen, arguing that Americans are increasingly dissatisfied with the economy despite President Donald Trump's return to office.