Ismail White and Chryl Laird's 'Steadfast Democrats' explains the puzzle of why Black Americans remain overwhelmingly Democratic despite significant ideological diversity within the community. White and Laird, political scientists at Duke and Bowdoin, argue that Black political unity is not simply a response to policy positions but a product of uniquely strong social norms enforced within Black communities. Drawing on surveys, experiments, and historical analysis, they show how churches, civic organizations, and social networks produce and police a norm of Democratic identification that transcends individual policy preferences. A Black conservative who votes Republican faces social costs that a white conservative does not, including being seen as disloyal to the community. The book traces how this norm developed historically, from the mass movement to the Democratic Party in the 1960s through its reinforcement in subsequent decades. White and Laird are careful to distinguish their argument from claims that Black voters are unsophisticated or manipulated; the social pressures they describe reflect rational community-level responses to a political system where racial group outcomes depend on collective action. Readers seeking to understand one of American politics' most consistent patterns will find a rigorous and illuminating analysis.