Bush's key strengths appear to be his organization and the perception among likely Republican primary voters think he is more electable than McCain.

CNN: Poll: Bush holds slight lead over McCain in South Carolina

With Tuesday's primary results, she has nothing in her arsenal to feed the perception that her campaign should continue.

NPR: Analysis: Clinton Lacks Clear Path to Victory

Policies should not be crafted based on public perception or public misconceptions of economic policy, and equality is not in and of itself the primary goal of a more redistributive state.

FORBES: America��s Love Affair with Being Middle Class