In 2009, the party began collaborating with former EuroscepticMEPJana Bobošíková, her party Politika 21, and other independent candidates. This electoral alliance ran in the 2009 European election under the name 'Sovereignty', led by Bobošíková. The list came fifth, winning 4.3% of the vote, just short of the 5% threshold for representation.
In 2010, the party changed its name to Sovereignty – Party of Common Sense (Suverenita – Strana zdravého rozumu), and won 3.7% in the 2010 election, again falling short of parliamentary representation. The cooperation between the two parties subsequently ended,[8] and the party returned to its original name in 2014.