Barack Obama won the Mississippi primary today by a huge margin: 60-37. Blacks composed more than half the turnout and 90% of them voted for Obama. Only a third of whites did, marking one of the most racially divided contests yet.

This is the beginning of a six-week lacuna between primaries — next up is Penn. on April 22 (Earth Day!). A good number of people seem to have lost their minds during this primary season. I expect everyone will by the time it’s over.

Grist thanks its sponsors. Become one.