BERLIN (AP) — Pirates are capturing Germany's political system.
The party with the outlaw name started as a marginal club of computer nerds and hackers demanding online freedom, but its appeal as an antiestablishment movement has lured many young voters to the ballot boxes, catapulting it into two state parliaments in less than a year.
The all-volunteer Pirates offer little ideology and focus on promoting their flagship policies of near-total transparency and an unrestricted Internet. But polls show them as the country's third-strongest political force, leapfrogging over more established parties.
The tremendous success has doubled the Pirates' membership to 25,000, but it also has handed them a crucial challenge set to dominate its convention starting Saturday: A party founded as a rebellious upstart must reckon with its new political power and its promise of a voice for all its members.
About 1,500 members gathered in the northern Germany city of Neumuenster to discuss the group's growth. New polls predicted it would win seats in two more state legislatures in May, with forecasters expecting it to secure about 9 percent of the vote in both states.
"Many vote for the Pirates as a sign of protest. It is not directed against democracy, but it's based on the unhappiness with the functioning of the established parties," said Alexander Hensel, a political scientist who studies the Pirates at the Goettingen Institute for Democracy Research.
Analysts say that despite the nation's robust economy and low unemployment, many Germans are disenchanted with the established parties, fueled by outrage over seeing the government bailing out banks and businesses to save the economy from collapsing in the wake of the financial crisis.
Thousands in Germany took to the streets last year in rallies during the worldwide Occupy movement, but it has now all but fizzled out — with the Pirates appearing to inherit the votes of the disenchanted.
While the mainstream parties in Europe's biggest economy are struggling to come up with a response to the continent's debt crisis, the Pirates cheerfully admit they have no answers. Nor do they have a stance on whether German troops should continue to fight in Afghanistan.
But many voters welcome their blunt acknowledgment as a sign of honesty in the political arena. Instead of taking a stand on the pressing issues that more mainstream parties are forced to address, the Pirates speak up against copyright laws, demand free public transportation, and say every citizen should be paid a basic income without having to work.
"The Pirates are elected less because of what they stand for than by disappointment with the established parties and for their unconventional methods," Hensel said.
The party's core pledge of transparency and participation — live transmission of all meetings and the online involvement of all party members in its decisions, countless Twitter debates and email chains — is reaching the limit of feasibility as the number of party members has mushroomed.
The question is: Will the Pirates change Germany's political system, or will the system crack the Pirates?
Hensel said the growing volunteer party will be challenged in its organization and leadership.
Its outgoing managing director, Marina Weisband, 24, collapsed last week between two TV appearances. She was briefly hospitalized, saying she was just heavily overworked. She and other Pirates now advocate having professional party leaders with more say in policy decisions.
But to grassroots Pirates, those calls amount to mutiny.
"The Pirates' opinion is created by the party members, not dictated by the chairman," outgoing party leader Sebastian Nerz said. "The individual's freedom stands at the top."
Nerz, 28, favored expanding the board from seven to nine members to give it a more professional structure, but wasn't re-elected Saturday, losing to his deputy, Bernd Schloemer, 41.
Recently the party has been marred by a scandal over how to handle the far-right past of some of its members, with many Pirates refusing to exclude anyone from membership. But on Saturday, party members overwhelmingly approved a motion saying that any effort to deny or minimize the Holocaust would be against the party's fundamental values, German news agency dapd reported.
Soon the party will need more professional politicians, if pollsters are right: In North Rhine-Westphalia, Germany's most populous state with 18 million inhabitants, the Pirates can expect to get 9 percent of the vote in mid-May, according to Emnid, which surveyed 1,001 people for Focus magazine this week.
Another poll for public broadcaster ARD published Friday also found the party securing about 9 percent of the vote in Schleswig-Hollstein state's May 7 election.
Pirate parties are now present in several European countries, but only in Germany have they skyrocketed to such success. In Sweden, where the movement originated, the party won 7 percent of the vote in European Parliament elections in 2009 but less than 1 percent in national elections the next year, making it a marginal party, albeit with a strong voice on cyber issues.
Germany's political establishment now sees the Pirates as poised to be in four of the country's 16 state legislatures within a month.
"They are an interesting appearance. And we don't know yet how that will develop," conservative Chancellor Angela Merkel told Saturday's edition of the daily Leipziger Volkszeitung.
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Juergen Baetz can be followed on Twitter at www.twitter.com/jbaetz