Mississippi governor Haley Barbour has just announced that he will not be running for president in the 2012 election. Barbour’s decision may influence Indiana governor Mitch Daniels, who is good friends with Barbour.

UPDATE: From Barbour’s statement about why he made this decision:

A candidate for president today is embracing a ten-year commitment to an all-consuming effort, to the virtual exclusion of all else. His (or her) supporters expect and deserve no less than absolute fire in the belly from their candidate. I cannot offer that with certainty, and total certainty is required.