COPENHAGEN (Reuters) - Three Danish opposition parties have said they will seek a referendum on Denmark joining the euro zone's banking union if parliament votes on such a move.
A bill to bring Denmark's banking system under European Central Bank supervision is likely to pass in a vote to be held after a parliamentary election on June 18.
But three parties object, including the Eurosceptic Danish People's Party, which is expected to do well in the coming election.
A weighted average of more than 10 polls taken in recent days shows that the three otherwise disparate parties - the DPP, Red Green Alliance and Liberal Alliance - could together gain 62 seats in parliament, more than the 60-seat threshold that is needed to call for a referendum.
"Our three parties have agreed to do what we can to avoid Danish participation in the banking union," Simon Emil Ammitzboll, a member of parliament for Liberal Alliance party, told Reuters.
"The government and the majority have refused to hold a referendum but we hope together to gain enough seats in the parliament, so the electorate can have its say on this very important issue," he said.