Dubbed the "Big Bang model", a referendum on all three opt-outs may be more successful than holding a referendum just on euro adoption, with 45 percent of Danes in favour of this move, according to a Megafon poll carried out in February. But the margin is still narrow, with 43 percent opposing it and 12 percent undecided.
A strong advocate for Denmark's euro-accession is Belgian Liberal MEP Guy Verhofstadt, who points to the fact that the country's economy is already fully integrated into the eurozone and that the Danish krone is pegged to the euro.
In addition, he believes that there is a need for a small country like Denmark to counter-balance Germany and France who "dictated" the competitiveness pact being currently drafted for the 17 member-strong eurozone.