General Election 2015: Cameron tells Scottish voters to back the Tories or face a 'coalition of chaos' under Labour and the SNP

Labour and the SNP are on “the same side” in a “coalition of chaos” and Scotland has a “once in a lifetime opportunity” to back the Conservatives, the Prime Minister and his Scottish party leader has warned.

At the launch of the Scottish Conservative’s manifesto in Glasgow, David Cameron, said any Labour-led alliance with the nationalists “posed a clear threat to our United Kingdom”.

He said any deal Ed Miliband forged with Nicola Sturgeon would leave the SNP “acting as the chain to Labour’s wrecking ball.”

Forecasting a wipe-out for Labour in Scotland and a similar fate for the Liberal Democrats, Mr Cameron reheated parts of the speech he made in London’s Olympic Park ahead of last year’s referendum to portray the Conservatives as the “proud party of the union.”

With the Scottish Tory leader, Ruth Davidson telling the selected Tory audience in Glasgow’s Emirates Arena that her party were “back”, “on the up” and had a “one in a lifetime opportunity in our grasp”, there was an air of delusion about the joint performance with Mr Cameron.

The Scottish Conservatives have spent the last 23 years sending either zero or one MP to Westminster. Polls this time round suggest this will barely change on May 7.

Mr Cameron’s predicted wipe-out for Ed Miliband and Nick Clegg’s parties and zero-chance of any substantial Tory resurrection north of the border, indicates he now expects SNP to deliver a near clean-sweep of Scotland’s 59 seats.

The main Tory manifesto pledges the creation of an effective “English” parliament within Westminster, where Scottish MPs will have limited authority. The equivalent Scottish document re-emphasises the policy as designed to “end the manifest unfairness” of Scottish MPs able to decide the outcome of English issues devolved to Holyrood.

As the party who aggressively campaigned against Tony Blair’s devolution plans in the 1990s, the Tories, with no MPs to lose in Scotland, are now in a polar-opposite position, backing “the most extensive package of tax and spending powers [to Scotland] of any devolved legislature in the world.”

Given the unprecedented multi-party swing to the SNP since they lost the referendum last year, Mr Cameron’s positioning of his largely irrelevant Scottish party as the only one that can save the union, is a high-risk strategy that favours the nationalists and is likely to hinder Labour’s chances of limiting their loses.

Although Ms Davidson said the devolution plan heralded “a radical new era for Scotland” where a “more powerful” Edinburgh parliament would be spend and raise money, Labour former shadow Scottish Secretary accused Ms Davidson of “Selling out Scotland.”

Margaret Curran said the Conservatives wanted to “keep Scotland’s voice out of key parts of the UK budget.” She said there was contradiction in Mr Cameron making emotional appeals on the union, “then setting out to break up the UK income tax system.”

Scotland faced being caught in a “classic pincer movement”, she claimed, cut out of future Tory budgets, alongside the SNP wanting cut Holyrood lose from UK taxes.

With large parts of the Scottish manifesto proposing policies on health, education, policing and housing that are devolved issues, and outwith the control of Westminster, Ms Davidson appeared to park the outcome of the 2015 general election and look instead to next year’s Scottish parliamentary vote.

She forecast that with enhanced “tax and spend” powers, “only the Scottish Conservative and Unionist Party will put taxpayers first.”

In a threat likely to be dismissed as over-optimistic, even for a Tory leader, she said “Our opponents better look over their shoulders – we are coming for the SNP and Labour.”

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