Which presidential campaign pioneered the use of micro-donation technology that raised over $500 million online through small-dollar contributions, forever changing political fundraising?

Political campaigns have undergone massive technological evolution over the years, adopting retail marketing technologies to reach voters more effectively. From door-to-door canvassing to sophisticated digital operations, campaign technology has transformed how politicians connect with constituents. This poll tests your knowledge about a famous technological advancement that revolutionized political fundraising and grassroots organizing in a pivotal American election.

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Barack Obama's 2008 campaign, which used custom platform 'MyBO' to facilitate small donations and grassroots organizing
Donald Trump's 2016 campaign, which leveraged Facebook's advertising tools for targeted small-donor acquisition
Bernie Sanders' 2016 campaign, which first used ActBlue's platform to revolutionize grassroots funding
Hillary Clinton's 2008 campaign, which pioneered text-message donations for presidential politics