***IT’S PERSONAL***

In CNN debate, Obama and Clinton let it all fly -- invocation by Him of her days as a corporate lawyer on the board of Wal-Mart, invocation by Her of Obama's ties to the indicted contributor Rezko.   Obama also took on the Bill Clinton fight directly -- with an extended discussion of the Reagan flap.   Lots of other battles on policy, votes, and quotes -- with Edwards often a bystander or, sometimes, siding with one or the other of his rivals.   Watch video of some of the most personal attacks -- in a night filled with personal attacks -- above.   Mark Halperin's Grades:   Obama A- Clinton B+ Edwards B+   Read Halperin's candidate report cards here.