Cameron to sign Scottish independence referendum deal David Cameron will meet Alex Salmond in Edinburgh following months of negotiations about the ballot, expected to be held in autumn 2014. Private meetings between the two governments have covered contentious issues about the question on the paper, expected to be limited to a single Yes-No option. Proposals for a second question on further devolution, short of independence, were firmly opposed by the UK Government. The referendum is expected to be open to 16 and 17-year-olds as supported by the Nationalists. Today's landmark event will determine a technical measure known as a Section 30, which passes power from Westminster to Holyrood to legislate on the referendum. Mr Cameron, Tory leader, has pledged that keeping the United Kingdom together is his number one priority. In a speech later today he will say: "This marks the beginning of an important chapter in Scotland's story and allows the real debate to begin. It is now up to the people of Scotland to make that historic decision. The very future of Scotland depends on their verdict. It is that important. This agreement delivers the people's referendum. Mr Salmond secured a mandate to hold the referendum by winning an unprecedented majority with his Scottish National Party at Holyrood last year. He said: "The people of Scotland gave the Scottish Government a clear mandate in last year's election to hold a referendum on Scotland's future in 2014. The agreement I expect to reach with the Prime Minister is one which ensures that not only is the referendum made in Scotland, but that the fundamental right of the people of Scotland to choose their own future is respected by all. The agreement will see Scotland take an important step toward independence, and the means to create a fairer and more prosperous Scotland. I look forward to working positively for a yes vote in 2014. The campaign picked up pace in February with a visit from the Prime Minister, followed by the formal launches of the pro-independence Yes Scotland and pro-Union Better Together cross-party movements. Negotiations between the governments have been led by Deputy First Minister Nicola Sturgeon and the UK Government's Scottish Secretary Michael Moore. The most recent poll on independence suggests support for leaving the UK has dropped. A survey of 995 adults, published last week, showed support for the Union at 53% compared with support for independence at 28%. But, according to the latest YouGov poll of 1,000 people commissioned by the SNP, 64% of respondents said they thought the Scottish Government was better at making decisions for Scotland than the UK Government which received 24%. Mr Moore told BBC Radio Scotland: "What we're focused on today is a very important agreement which will allow us to have a referendum to make the most important political decision in our lives, in fact the most important political decision in Scotland's 300 years, so we have a referendum on independence that is legal, that is fair and is decisive and crucially is made in Scotland, and all of those are things I said we wanted to achieve when we began this process back in January, and I'm really delighted that working constructively with the Scottish Government that's what we've now achieved." Asked whether the referendum would be an opportunity for people to say whether or not they like the Westminster Government, he replied: "I think this is a very different kind of referendum, this is about the very existence of Scotland and how it continues, whether it's part of the UK or a separate country." Mr Moore said people would have to weigh up whether it is better to remain part of the Union. He said: "The opportunities in continuing to be part of the United Kingdom are strong. Our place in the world - we have much more clout as part of the UK at the top table at the United Nations and Nato, in the European Union, we've got much greater security as part of an economy, the fourth largest defence spender in the world, lots of jobs dependent on that . I think these are the issues that people are going to focus on and that will be much more powerful than an uncertain prospect. What we've not had so far is anybody spelling out what independence will look like, lots of risks attached to it which have not yet been thought through by the SNP. Deputy First Minister Nicola Sturgeon denied that the Scottish Government had been out-negotiated by the UK Government because it had failed to secure a "devo-max" second question on the referendum ballot paper. She told the BBC Radio 4 Today programme: "No, that's not how I see it. We have never said we wanted a second question on the ballot paper. What we did say was that option shouldn't be ruled out prematurely; it would have been better left to the Scottish Parliament to decide that. But in any negotiation there has to be compromise. Both sides have compromised but overall I'm very satisfied that we have a deal that guarantees a referendum made in Scotland. The SNP's deputy leader insisted that the party had initially put forward plans for a second option on the ballot paper because there are "many people who think that is their preferred outcome." We think a referendum above all else should be democratic and should be about making sure people can have their say in an open way.