The Party of Common Sense (Strana zdravého rozumu), led by Petr Hannig, took part in the 2002 election to the Chamber of Deputies three months after its foundation, winning 0.2% of the vote.

[citation needed] In 2009, the Party of Common Sense began cooperating with former Eurosceptic MEP Jana Bobošíková (elected in 2004 for the Independents), her party Politika 21, and other independent candidates.

The Party of Common Sense 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.

[citation needed] The party changed its name to Free Bloc (Volný blok) when Lubomír Volný, an MP for the Freedom and Direct Democracy party, joined Czech Sovereignty and became its parliamentary leader.

Free Bloc won 1.33% of the vote in the 2021 election, falling short of parliamentary representation.