The first indications of the style of the question emerged as Prime Minister David Cameron's government prepares to publish the bill paving the way for the referendum the day after today's Queen's Speech.
This is when Queen Elizabeth II outlines the government's legislative programme to parliament in a speech written for her by the new government.
Cameron, who won a surprise outright majority at this month's general election, promised two years ago -- under pressure from eurosceptics -- to hold a referendum on whether Britain should leave the EU.
That would allow those fighting to stay in Europe run a "Yes" campaign, seen as an advantage as it allows them to present a positive argument.
The EU referendum bill, which is due to be published tomorrow, is expected to keep open the prospect of a vote next year -- which Cameron has not ruled out -- but not include a date for the ballot.
After he addresses the House of Commons on the Queen's Speech today, Cameron will begin a whirlwind diplomatic offensive, meeting the leaders of five European countries, including Germany, France and Poland, tomorrow and on Friday.
He is seeking a string of reforms to the EU before the referendum, including on benefits payments to migrants which he says will require treaty changes.
If Cameron can secure these, he says he will campaign in favour of Britain, the EU's second-biggest economy, remaining part of the 28-nation bloc.
