U.S. politics are rigged. It's time for a small-donor revolution.

If tens of millions of ordinary Americans flood federal elections with small contributions they can dilute the power and impact of big money in U.S. politics. Candidates could run for office without being beholden to influence-seeking funders.

Major technological breakthroughs could revolutionize our campaign finance system, creating new ways for donors to give and for candidates to raise small donations throughout the election cycle. President Barack Obama demonstrated what new technologies can do: He raised more than $1 billion online for his two presidential campaigns. Senator Bernie Sanders and President Donald Trump were both remarkably successful in raising small donations online in the 2016 presidential race.