Michelle Obama, IMHO, seemed a tad edgy at the outset of her address, but she rallied and brought it home, coming across as quite likeable. And it was hard not to be impressed by the force of will propelling Ted Kennedy. The media commentary on both speech appears generally positive.
Meanwhile, a Quinnipiac poll (h/t Halperin) shows that voters in the battleground states of Florida, Pennsylvania, and Ohio want to elect a Democrat, but that the leader of the race varies among those states.