Well, I am not running for office, I am not an apologist for any political party, so I can say what I think. The federal government's insistence on cutting sales taxes is not a great idea.
In the short run, insisting on GST cuts merely makes a record federal deficit bigger, cuts into the EI surplus, necessitates the increase of EI premiums, and hampers the government's ability to help Canadians weather the recession.
In the medium term, (i.e. the duration of the recession), the majority of academic economists are surely right when they say that GST cuts are not the most effective way of delivering counter-cyclical stimulus (number 1 is EI , number 2 is infrastructure). When Harper is dismissive of the economics profession saying that "retailers are in favour of it", he is talking about a segment of the population that can only capture a small part of the benefits of alternative spending, but a large part of the benefit of the sales tax cuts. THEIR INTERESTS ARE NOT IDENTICAL TO THE LARGER PUBLIC INTEREST.
In the long run, surely we want to build a taxation system that 20 years from now has both (1) met the challenges of an aging population and the need for wise social investments; and (2) has shifted the burden of taxation away from earned income, savings and investment and towards pollution and expenditures. Our society will be more equitable and efficient as a result. (Even though expenditure taxes are regressive compared to income taxes, that feature can be rectified by devices like the GST tax rebate for people earning lower incomes, and more targetted spending in certain areas.)
The GST cut maybe not stupid politically though---if opposition parties were as strident as I am in this blog, Tories could then say that the Opposition favours "higher taxes"--which is misleading (under the Conservatives' GST cut, Canadians simply will pay out of their other pocket with deficit that is $12 billion higher, EI premiums that are higher and benefits that are smaller, etc.), On the other hand, if the opposition declines to take the bait, it becomes harder to distinguish their policies, or pay for all of their promises.
Pre-recession policies like GST tax cut and $1200 child tax credit feature prominently in Tory ads as part of Canada's "Economic Recovery Plan". What's wrong with that? It certainly saves money to dress up old policies in new clothing, but it makes you wonder if maybe other countries are doing more to use the crisis as an opportunity to build green infrastructure, etc.
I suspect that this political management of the recession--just like the Liberal management of Kyoto--is penny-wise and dollar poor.{BY the way, isn't it remarkable that Stephen Harper can be so responsible for giving minority government a bad name--and then use that effectively as an argument for giving him a majority? It's not that he is so terribly clever; it's simply that he has a huge structural advanatage that comes from having a unified party on the right and a high degree of fragmentation on the centre-left. May I suggest once again that the Green Party step down in 30 Liberal-designated marginal seats and in 15 NDP marginal seats, in exchange for the Liberals and NDP giving Elizabeth May a clear shot at Gary Lunn in Saanich and the Islands?}