Which retail analytics innovation most significantly boosted merchandise sales during the 2020 U.S. presidential campaigns?

In modern politics, campaign merchandise has become a significant revenue stream and promotional tool for candidates. Campaign teams increasingly rely on sophisticated retail analytics to optimize their merchandise strategies. This trivia question explores how data-driven approaches have transformed political campaign merchandise sales in recent elections.

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Geofencing technology that targeted merchandise ads to voters in swing states based on their physical location
Virtual reality stores allowing voters to 'try on' campaign merchandise before purchasing
Blockchain-based authentication systems for limited edition campaign collectibles
AI-powered pricing algorithms that adjusted merchandise costs based on polling numbers