Political Advertising Online
How digital political advertising works, the role of micro-targeting, and debates over transparency and regulation.
Micro-Targeting Explained
Political micro-targeting uses data about individuals — browsing history, purchasing behavior, social media activity, voter registration records — to deliver customized political messages to highly specific audiences. A campaign might show different ads about the same candidate to gun owners, suburban parents, and young environmentalists, emphasizing entirely different policies.
The Cambridge Analytica scandal of 2018 revealed that the firm had harvested data from 87 million Facebook users without consent to build psychological profiles for political targeting. While experts debate how effective this profiling actually was, the scandal triggered a global conversation about data privacy and the ethics of behavioral targeting in politics.