As the portal czechposition.com writes Czech government adopted a proposal concerning national referenda which gives Czechs the chance to vote in referendum on important national and foreign issues.
According to the proposal calling referendum 250,000 signatures under a petition and for the referendum to be valid the turnout cannot be lower than 50% of the voters.
The latest referendum in Czech Republic took place in 2003 and Czechs voted in favour of joining the European Union.
More here.