There are so many marginal seats here that a small shift either way could dramatically change the race – but at present, the SNP look on track for a good night.
Amidst the gathering leadership election debate, there is a lack of focus on who such voters are and where they live.
A party which usually operates with an almost eerie level of phalanx-like discipline is struggling to contain a split at the very top.
As the SNP have a terrible night, the Tories post their best seat total north of the border since 1983.
Continuing our ConservativeHome series on the key contests in each region or nation.