Political ads have little persuasive power: study

Every four years, U.S. presidential campaigns collectively spend billions of dollars flooding TV screens across the country with political ads. But a new study co-authored by Yale political scientist Alexander Coppock shows ...

Facebook moves toward revealing political ad backers

Facebook said Friday it would take steps to deliver on a promise to reveal backers of political advertisements to boost transparency in the wake of criticism of the social network's role in the 2016 US election.

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