What was the main purpose of the Better Together Campaign? Was #1 against independence of Scotland? Was Alistair Darling the chair of the campaign? Is #2 or #3 negative?
Scottish independence
Alistair Darling was the chair of the Better Together Campaign. Better Together was the principal campaign for a No vote in the 2014 Scottish independence referendum, advocating Scotland continuing to be part of the United Kingdom. 
political aim for Scotland to be independent from the UK
Is Alistair Darling in favor of Scottish independence?