Facebook’s ad tools subsidize partisanship, research shows. And campaigns may not even know it.

Laura Edelson is a Ph.D. student under Damon McCoy, assistant professor in the department of Computer Science and Engineering at NYU Tandon.

… "If a voter is being asked to vote on a ballot measure or candidate, ads from both sides are equally relevant to them - but there is probably one side they 'like' more," said Laura Edelson, a researcher at New York University's Tandon School of Engineering who was not involved in the research but praised its results.

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