What on earth? Nothing is clear absolutely nothing. Kerry's lead last month was fragile, as is Bush's lead today. Bush will climb into September but its not over. Not by a long shot. Gore was down in dozens of national and state polls this time last round and he bet Bush in the popular vote.
Yes, Gore was down at this point in the campaign in 2000. The difference between then and now is that then it was Gore who was having the later convention to make up for some of his popular deficit. This time around, Bush is not only up, he's up right before the start of the republican convention.