Which celebrity's 2008 presidential campaign endorsement was estimated to have brought approximately 1 million additional votes to the candidate and pioneered the strategic use of social media in political endorsements?

In the world of politics, celebrity endorsements can significantly impact campaign visibility and voter perception. Throughout history, various high-profile figures have lent their influence to political candidates, sometimes creating watershed moments in campaign strategy. Test your knowledge about one of the most famous political endorsements that changed the game for presidential campaigns in the digital age.

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Oprah Winfrey for Barack Obama
Bruce Springsteen for John Kerry
George Clooney for Hillary Clinton
Taylor Swift for Joe Biden