Um, no she didn't.

The headline...

Clinton challenges Obama to Lincoln-Douglas style debate

The challenge...

"Just the two of us, going for 90 minutes, asking and answering questions, we'll set whatever rules seem fair."

Shouldn't somebody at the AP know what a Lincoln-Douglas style debate is? Whatever the merits of Senator Clinton's proposal may (or, from the Obama perspective, may not) be, it has nothing to do with the Lincoln-Douglas format.

Fair? How about an nationally televised uninterrupted hour for Barack Obama to lay out his vision and program for America, followed by ninety minutes of Hillary Clinton discussing her vision and program in contrast to that, with the time balanced with a thirty minute rejoinder from Obama. That's Lincoln-Douglas style.

Sounds fair to me.