[user104658]

I agree with most of the above other than that THIS year I believe that the SNP should be involved. In a "normal election year", no, but given the political events of 2014 and the fact that we came fairly close to changing UK politics forever, and that there has been a significant knock-on effect from those events that is still in play, and the huge increase in party membership, for THIS general election I think it would be appropriate to include the SNP, as it would be appropriate to still be discussing the Union at this point. It's sort of in limbo at the moment. Obviously it did not split, but also, it's far from being strong, and there is a lot of "bad blood".