Now the first thing to remember is that quite a lot of people in Scotland vote Tory. It is like masturbation: a lot of people do it, but only a few admit to it! The image below shows that at the last General Election the Tories, the SNP & the Lib-Dems all had about the same vote share.
So why all the fuss about the Tories then? The answer is simple: the SNP need Labour voters on their side if they are to win #indyref. It was not always like this. Indeed, in the 2007-11 parliament the SNP relied on Tory support to pass each of its budgets. This is because, there is a synergy between the "conservative" polices both SNP and the Tories aspire to. Ruth Davidson on SNP voters: "A significant proportion of them have voted Conservative in the past, the Tartan Tories that exist within the SNP as they call them". The key to Salmond's success has been his ability to dress up his regressive polices as something which benefit the working class. Some would call it dishonest. Lastly, never forget that Salmond has claimed Scots "didn't mind" Margaret Thatcher's notorious 1980s economic policies.