First, extending the high-income tax cuts would provide very little job creation in 2011. There is widespread agreement that the short-run economic benefits of high-income tax cuts are small. The Congressional Budget Office lists a tax cut for high-income earners as a particularly ineffective job creation measure. Private sector forecasters have reached the same judgment. The vast majority of economic research shows that higher-income earners spend less of a tax cut and so tax cuts to those earners create fewer jobs throughout the economy.
They won't create jobs. They WILL create a larger deficit. And they won't really stimulate economic growth. So why do the Republicans support the tax cuts for the super rich? I think I just answered my own question.