In general, a number of international organizations, such as the IMF and OECD, would note that lowering corporate tax rates has a positive impact on the economy, largely in the sense that it increases the rate of return to investment and reduces the cost of capital. You expect to see a strong investment response to that.
Obviously, with the recession there's a bit of a cyclical aspect here. But most recently, investment, as one of the components of domestic demand, has been relatively strong. In fact, Canada is the only G-7 country that has now achieved its pre-recession level of business investment during this time period.