At the latest “debate” in Iowa, for instance, where The Newtster:

Mr. Gingrich has a pro-growth 15% flat-tax-reform program. But he never mentioned it. He recalled that he campaigned with Ronald Reagan and Jack Kemp. But he neglected to talk about their supply-side tax reforms that ignited growth and ended the stagflation of the 1970s.

If Newt truly understands the supply-side power of low marginal tax rates, he should talk about it and connect it to job creation and growth. But he didn’t. This was a disappointment.

And Romney-man:

Governor Romney has a business-tax reform to lower the corporate rate to 25%. This is good as far as it goes (lower would be better). But so far, Mr. Romney has not proposed a flat-tax reform for individuals that would slash rates and broaden the base. Meanwhile, his staff has been trashing the flat taxes proposed by Mr. Gingrich and Governor Perry. Does Mr. Romney believe in the incentive-model of growth?

All of which critique is based on the economy, stupid central issue, as L. Kudlow points out:

This election is principally about the economy and its poor performance. It’s about the slow rate of growth, the high rate of unemployment, and the tax, regulatory, spending, and monetary obstacles conjured up by President Obama that are holding back the animal spirits that are so essential to job creation and prosperity.

Risk-taking is virtually absent today. Business profits are strong, but firms won’t make commitments in front of Obamacare, regulations, mandates, and tax threats. The president is on the campaign trail with a leftist, class-warfare message. He blames successful entrepreneurs for their wealth, and slurs high-powered businesses at every turn.  His is a big-government planning vision, an FDR-like vision.

And doomed to failure.  Let’s hear it for growth.  Please.

(Church people, take note also: Prosperity is not a dirty word to people who care about people, poor or otherwise.  Get with it, bishops.)