This book advances a 'naturalized' normative theory of deliberative democracy; one that is informed by an empirically-grounded analysis of public deliberation in naturalistic settings and in unadulterated form, and goes on to provide institutional design proposals for how to improve it.

Democracy today faces deep and complex challenges, especially when it comes to political communication and the quality of public discourse. Dishonest and manipulative communication amplified by unscrupulous politicians and media pervades these diabolical times, enabling right-wing populism, extremism, truth denial, and authoritarianism to flourish. To tackle these issues, we need to encourage meaningful deliberative communication – creating spaces for reflective and constructive dialogue, repairing unhealthy public spheres while preserving healthier ones, and building discursive bridges across deep divides. Citizens who see through elite manipulations should be at the core of this response, especially if bad elite behavior is to be effectively constrained. Democratic activists and leaders, diverse interpersonal networks, resilient public spheres, deliberative innovations and clever communication strategies all have vital roles to play in both defending and renewing democracy. Healthy discursive infrastructures can make democracies work again.

Democratic theory's deliberative turn has hit a dead end. It is unable to find a good way to scale up its small-scale, formally-organized deliberative mini-publics to embrace the entire community. Some turn to deliberative systems for a way out, but none have found in that a credible way of deliberatively involving the citizenry at large. Deliberation Naturalized offers an alternative way out-one we have been using all along. The key sites of democratic deliberation are citizens' everyday political conversations networked across the community. Informal networked deliberation is how all citizens actually deliberate together, directly or indirectly. That is how public opinion emerges in civil society. Networked deliberation satisfies the classic deliberative desiderata of inclusion, equality, and reciprocity, albeit differently than standard mini-publics. Reconceptualizing democratic deliberation in those terms highlights some real threats to the networked mode of deliberative democracy, such as polarization, message repetition, and pluralistic ignorance. Deliberation Naturalized assesses the extent of each of those threats and proposes ways of protecting real-existing deliberative democracy against them. By focusing on the mechanisms underpinning everyday democratic deliberation among ordinary citizens, Deliberation Naturalized offers a truly novel approach to deliberative democracy.