Mitt Rommey's strategy is to run an intensely negative campaign, drive down turnout, and use his money/establishment connections to turn out his base voters (wealthies and Mormons). Every state but South Carolina has seen a significant decline in Republican turnout. This strategy might win Mitt the nomination, but it'll leave behind a scorched earth with little organization or enthusiasm for the fall.
He's banking on the same strategy to also work in the fall.
Which is why I'm glad he's going to be the nominee. It'll be an hilarious failure.