Iain Macwhirter in the Guardian gives his assessment of the Tories in Scotland:

"[T]he Tories have been flatlining in Scotland – there has been no observable Cameron bounce so a bit of policy pilfering isn't going to make much of a difference. Scotland is already another country for the Tory party in Birmingham. There is only one Scottish Tory MP left – David Mundell – and he isn't exactly a charismatic figure. The days when the Tories ruled in Scotland are long gone.

The present Scottish Tory leader, Annabel Goldie – a robust Tory matron straight out of an Ealing comedy – is a popular media figure in Scotland, but largely because of her eccentricity. The Scottish Conservatives aren't going anywhere electorally, so they have tried to hitch onto the success of the SNP. Scottish Tory MSPs in Holyrood helped the SNP form their minority administration by not allying with Labour and the Liberal Democrats in their "pan-unionist, anti-SNP coalition".

It is not just the Tories.  With Labour faltering badly and the Liberal Democrats going nowhere fast, the opposition to the SNP is weak and directionless.  Macwhirter notes that both the Tories and Labour have been pinching eye-catching policies from the Scottish Nationalists to put in their conference announcements over the past couple of weeks.  Opposition?  Alex Salmond will be laughing all the way to the ballot box at this rate.