Bernie Sanders recorded a resounding victory in New Hampshire's Democratic primary Tuesday. He crushed his rival, Hillary Clinton, with no less than 60 percent of the vote. If Sanders hopes not only to win the election but to achieve his ambitious progressive agenda, though, that might not be enough.

To succeed, Sanders might have to drive Americans who don't normally participate to the polls. Unfortunately for him, groups who usually do not vote did not turn out in unusually large numbers in New Hampshire, according to exit polling data.

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...As for Sanders, he credited his victory to turnout. "Because of a huge voter turnout -- and I say huge -- we won," he said in his speech declaring victory, dropping the "h" in "huge." "We harnessed the energy, and the excitement that the Democratic party will need to succeed in November."

In fact, Sanders won by persuading many habitual Democratic primary voters to support him. With 95 percent of precincts reporting their results as of Wednesday morning, just 241,000 ballots had been cast in the Democratic primary, fewer than the 268,000 projected by New Hampshire Secretary of State William Gardner last week. Nearly 289,000 voters cast ballots in the state's Democratic primary in 2008.

To be sure, the general election is still seven months away. Ordinary Americans might be paying little attention to the campaign at this point, and if Sanders wins the nomination, he'll have the help of the Democratic Party apparatus in registering new voters. The political revolution hasn't started, though, at least not yet.