In the first week of the new year, in two very different parts of the globe, the citizens of two very different democracies were struggling with a very similar problem: how to reform a corrupt but legitimately elected political elite.

This isn’t a new problem, or an unfamiliar one. It certainly isn’t limited to the developing world. Voters in the United States and Europe have long grappled with flawed democracies and flawed democrats, as have voters from Mexico to Turkey to Brazil. But in recent months, the fight for reform has taken particularly dramatic turns in India and Ukraine.

Anne Applebaum writes a biweekly foreign affairs column for The Washington Post. She is also the Director of the Global Transitions Program at the Legatum Institute in London. View Archive

In Kiev, opponents of the current government are hunkering down for what looks set to become an extended street revolution. On New Year’s Eve, more than 100,000 Ukrainians gathered on the Maidan, the capital’s central square, and sang their national anthem (“Ukraine Has Not Yet Perished”) at the stroke of midnight. A smaller group of protesters have not left the square at all since the Ukrainian president, Viktor Yanukovych, abruptly refused to sign a trade treaty with the European Union in November. The participants support closer links to Europe and oppose closer union with Russia. They also oppose the authoritarianism that Russia represents, as well as its echoes at home: their own corrupt, oligarchic economy, their own murky security police. The latter beat up one particularly vocal Ukrainian activist on Christmas Day and left her for dead.

But while all of these things are said openly every day on the Maidan, there isn’t much evidence that anyone in power is listening. Yanukovych’s government gave up trying to clear the square by force — violence inspired more demonstrators — and now seems inclined to wait it out. It’s cold in central Kiev; people have jobs and families. It must be something to hear 100,000 people singing at midnight, but how does that change things? The crowd wants Yanukovych out, but an alternative has not yet emerged.

A year ago, a similarly broad and inchoate reform movement in India had reached a similarly dramatic turning point. Throughout 2011 and 2012, Anna Hazare, an activist who uses the symbols and tactics of Mohandas Gandhi — simple dress, nonviolent protest, hunger strikes — mobilized hundreds of thousands of Indians to support his campaign against corruption and in favor of political reform. He had some success: His 12-day hunger strike in August 2011 forced a panicked Indian government to agree to pass new anti-corruption legislation.

But after that, Indians began to drift away. A sense of stasis returned. The movement divided, and its leaders began to argue. One, Arvind Kejriwal, wanted to turn the street revolution into a political party. Hazare was against it. “Politics is not service,” he declared, “it is all about selfishness.” Kejriwal disagreed. He left Hazare and founded Aam Aadmi, the Common Man Party, a move that many deemed quixotic. Even his admirers thought it made no sense to challenge India’s large and well-funded mainstream parties.

They stopped laughing when Aam Aadmi emerged as the governing party in Delhi’s state assembly after elections in December. I was in India last week, just days after Kejriwal became chief minister of Delhi — the top executive of a region containing 22 million people — and no one was laughing then either. On the contrary, the Indian press marveled: Kejriwal is conducting meetings out of his tiny, suburban apartment! Kejriwal wears a paper Gandhi cap! Within hours of taking office, he had banned water payment schemes that Delhi bureaucrats had long used to enrich themselves.

Kejriwal may turn out to be a disappointment. He may indeed be corrupted by power. His party may not be strong enough to win national votes. In the southwestern city of Kochi, I was told that Aam Aadmi still had no local presence, though many hoped it would. But Kejriwal’s decision to join the fray, to institutionalize his movement, to enter the “selfish” world of politics and leave behind the purity of the street revolution, has given him and his supporters the opportunity, at least, to bring about deeper change.

The real test of Ukraine’s revolution is whether its leaders can now do the same. Indeed, this is the real test of any protest movement in any democracy: Can its members find a way to join the system in order to change the system? In the end, a street movement’s success isn’t determined by the crowds it can mobilize, the clever slogans its members chant or even the government ministers it persuades to resign. Success is creating a real political alternative — and then getting that alternative elected to power.

Read more from Anne Applebaum’s archive, follow her on Twitter or subscribe to her updates on Facebook.