[identity profile] danieldwilliam.livejournal.com 2011-09-07 12:37 pm (UTC)(link)
50% plus 1 vote.

Not sure what happens if the referendum is multiple option. Perhaps we use AV.

[identity profile] gonzo21.livejournal.com 2011-09-07 01:35 pm (UTC)(link)
Wasn't the last referendum set up that it needed 60% in favour of independence, because it was such a huge revolution for the country, that they felt that a yes vote with 50%+1 was going to be very hard to convince the other half of the country to go along with it.

[identity profile] danieldwilliam.livejournal.com 2011-09-07 01:44 pm (UTC)(link)
The devolution referendum in the 70's required 50% plus 1 to vote Yes and for 40% of the electorate to vote Yes also - so a requirement for a high turn out.

I think the official reason was that a big change constitutional required significant backing. I think the real reason had more to do with the Labour Party's concerns about losing UK General Elections.

The devolution referendum in the 90's was a straight 50%+1

We've yet to have a referendum on independence.