Given the nature of mass media in the USA is democracy possible in a Nash Equilibrium ?

In contrast to previous research, we find little evidence that citizens are mobilized by or learn from presidential advertisements, but strong evidence that they are persuaded by them. This research supports the contention that political communication is best conceived of as propaganda rather than a vehicle to enhance democratic accountability. We find that campaign advertisements are able to persuade voters to support one candidate over another.
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See also - QRE