One of the very few blogs which has charted this sea change in the importance of field is the estimate 538, where Nate and in particular Sean Quinn have detailed the advantage between the two campaigns at this point. Keeping in mind that we're 77 days out, some of these numbers are simply incredible. Obama has a 3:1 lead in field offices, behind in only one battleground state (Florida). His edge in voter contacts—knocking on doors and making phone calls—is maybe 35:1, and that's probably an extremely conservative estimate. Sean today gave context to this TPM report about McCain's spending advantage on television by looking at the big picture:
While millions may be spent on advertising, so too is one campaign spending millions on ground game while the other is spending virtually nothing. Obama is investing more massively than any campaign in the history of American politics on the ground game. McCain is essentially not investing in ground. His early summer numbers of 20,000 phone calls nationwide for a whole month would be those of a single, low-budget House campaign. That's the equivalent of one person working ten hours a day for a month. For the entire nation. It's basically the equivalent of zero contacts.
After that the article gets limp, too long, and didn’t keep my attention.