A voter turnout group says Facebook served 36.8% of their conversion ads to iOS users after Apple's ATT change, down from 63.6% (Issie Lapowsky/Protocol)

Issie Lapowsky / Protocol: A voter turnout group says Facebook served 36.8% of their conversion ads to iOS users after Apple's ATT change, down from 63.6%  —  Tatenda Musapatike is as familiar as anyone with the way Facebook's political ad system works.  During the 2016 election and the 2018 midterms …
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