the first lady of the united states, michelle obama, has tonight's most critical job, reminding voters why they liked her husband enough to put him in the white house, and to make the case for giving him another four years. joining us now in our coverage all of this week, anderson cooper, high above the floor. >> our new poll shows why that case is more urgent than ever for the democrat. new numbers on mitt romney's convention bounds. john, what are the numbers? >> anderson, as the democrats open their convention tonight, let's look at that very question. we know governor romney got a one-point bounce out of his convention, not so great, about half what the president got four years ago. not a big bounce. where does that leave us? the democrats' opening night two months from a critical election day. doesn't get any closer than that. 48-48. >> the convention will pay tribute to a champion of health care reform, the late senator edward kennedy, and the woman who stood by his side,...