Which pioneering product advertising technique was first successfully deployed at scale in a presidential campaign during the 2008 US election?

In recent years, political campaigns have evolved dramatically in how they position their candidates as products to voters. Modern political marketing uses sophisticated digital strategies that mirror retail advertising techniques. This trivia tests your knowledge of how political campaigns have adopted retail marketing principles to reach and persuade voters in the digital age.

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Microtargeted digital ads based on psychographic profiling of voters
QR code-based donation systems on campaign materials
Augmented reality campaign rally experiences
Blockchain-verified campaign contribution tracking