Which innovative campaign product strategy, first fully implemented during Barack Obama's 2008 presidential run, revolutionized political marketing by using big data for micro-targeting voters?

In the world of political campaigning, product development and marketing strategies are crucial for success. Public policy initiatives and government programs are essentially 'products' that need effective branding and marketing to gain public support. This trivia question focuses on a revolutionary campaign strategy innovation that changed how political candidates connect with voters in the digital age.

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Project Narwhal - A database integration system that combined voter data, donation records, and social media activity for personalized outreach
Liberty Eagle Initiative - A direct mail campaign system that used demographic data to customize political messaging for different zip codes
Democracy Direct - A television ad buying platform that targeted specific programming based on Nielsen household political affiliations
Citizen Voice Project - A robocall system that delivered different policy messages based on voters' previous party registration