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Facts are chiels that winna ding – fellows that can’t be overturned – said the Scottish poet, Robert Burns.

But Burns never covered a general election campaign. In politics, facts can be whatever you say they are – particularly if you can mobilize an army of Twitter trolls to de-legitimize anyone who deviates from the truth you have constructed.

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[np_storybar title=”Conservatives say Liberals miscalculated cost of Trudeau tax plan by $1-billion” link=”http://news.nationalpost.com/news/canada/canadian-politics/conservatives-say-liberals-miscalculated-cost-of-trudeau-tax-plan-by-1-billion”]

The Harper government claims the $2-billion hole in the Liberal Party’s child benefit plan has grown by another billion dollars because they have miscalculated the cost of cancelling the existing Conservative program.

As a taxable benefit, the Liberals have ignored the nearly $1 billion in tax revenue generated by the government’s existing child benefit measure, the government said – a charge the Liberals deny.