There is a democratic issue especially for the rest of the UK if Scotland do become independent. It is one of those issues that politicians won't talk about until it happens, but there is a reality to it. The rest of the UK needs to prepare itself for permanent Tory Governments on a minority vote if Scotland leaves.
2010 election Scottish MP's
Labour 41 - 42% of vote
Lib Dems 11 - 18.9% of vote
SNP 6 - 19.9% of vote
Conservative 1!!!!!!!!!!!!!!!! - 16.7% of vote
You can perhaps understand why many people in Scotland would be ok with independence when you see that one Tory mp and the fact that the Tory support is dead North of the border, yet they have to put up with Tory Governments telling them what to do. You've more chance of finding the Loch Ness Monster in Scotland than a Tory MP.
Interesting also that the independence charge is led by the SNP, yet Scotland would probably be ruled by the Scottish Labour Party if past national results are anything to go by. SNP only got 20% of the Scottish vote, Labour 42% last time.
So, the national Government majority party has 1 mp in Scotland! An absolute joke of British democracy. The Lib Dems are part of the coalition and their 11 count, but they are the minority party. Conservatives wouldn't need them with No Scotland.
National Result 2010
Conservative 307
Labour 258
Lib Dems 57
Others 28
So, take away the Scottish seats and this is what you get.
Conservative 306
Labour 217
Lib Dems 46
Others 22
Tory majority of 21.
Without boundary changes in the South it is unlikely that Labour ever get elected again, at least not without LibDem support. Some would say great to that, but considering all UK Governments are elected on a minority vote it isn't necessarily a good thing for democracy. If Scotland does vote for independence - and it should be their choice - the rest of the UK is essentially an English Parliament more than ever before and is unlikely to be anything other than Tory, with the alternative being a Lab/Lib coalition.
Labour would need to become more Tory than ever before to get those southern votes. One chance Labour might have is if UKIP get enough Tory votes at enough seats to let the Labour candidate in, hardly democratic. UKIP has no chance of winning many seats anyway because of the First Past The Post system and the way this traditionally benefits the Conservative and Labour Parties at the expense of all others. A third party in the UK needs to get about 30% of the vote to win a significant number of seats, say 50-100. In the 2007 election LibDems had 22% of vote 62 seats, Tories 32% 198, Labour 35%, 355 seats. The vagaries of the system mean that Labour can win big without Scottish seats, but it would rely on split and protest votes against the Tories to do so as happened in 2007.
It should also be noted that Scotland, like Wales and N Ireland already has a degree of autonomy, their own parliament and budgets, but within the power structure of the UK and National Parliament. There's nothing wrong with Scotland deciding on their own future, but no one in England and the rest of the UK should kid themselves that it won't effect the rest of the UK.