KIEL, GERMANY — When the results in Germany’s most recent state election came down, the Pirate Party cued up what could be their new theme song: “We are the Champions” by the rock group Queen blared from the speakers as exit polls showed the young party entering the third regional legislature in three elections.

The 8.2 percent share of the vote the Pirates won on Sunday in Schleswig-Holstein, the largely rural, northernmost state, solidified the presence of the upstart party in Germany’s political landscape, proving its ability to attract voters beyond the Twittersphere who are fed up with a political bureaucracy they view as disconnected from the people.

The Pirates drew thousands of voters from the traditional center-right and center-left parties, an analysis of the results showed, in addition to about 10,000 voters who cast ballots for the first time. Their next challenge comes this Sunday, when an election will be held in Germany’s most populous state, North Rhine-Westphalia. Although the Pirate Party, formed six years ago in Berlin, has dropped recently in the polls, it looks poised to earn enough ballots to clear the 5 percent threshold needed to win seats in the state legislature there as well.

Such a showing would be an important milestone for the party, given that nearly a quarter of the German population calls the state home, and it would undoubtedly add a new dimension to the political pressures heaped on Chancellor Angela Merkel as she tries to navigate the competing domestic and European-wide demands about how best to address the euro crisis.