While the literature on the definition, features, and establishment of hybrid regimes has been extensive, a gap exists about their internal dynamics. The article develops a four-stage model of the political cycle to trace changes in input and output legitimacy. Using Hungary as a case study, it shows a downward spiral of corruption and ideological degeneration due to the inherent contradictions between the initial promises and the real objectives of governance. These developments have undermined output and input legitimacy as shown by the changing composition of government supporters toward poorer, less educated, rural, older people and the increasing manipulation of the electoral process. Such dynamics imply significant vulnerabilities for the regime.