AP:

Another official said that the Republican Party and the campaign will have between $224 million and $240 million available next week going into the fall campaign. That amount would include the $85 million in public funds that McCain will receive after he officially becomes the Republican nominee on Thursday…
The $47 million represents money raised by the campaign and McCain’s share of a joint victory fund set up with the Republican Party. In July, McCain’s last best fundraising performance, he raised $26 million.
The McCain camp expects the Republican National Committee’s McCain-Palin Victory ‘08 fund to raise $100 million in September and October, giving the campaign overall access to more than $300 million for the fall contest.
Obama decided to decline his share of federal funds, anticipating he could raise more though private donations. Fundraisers have said he and the Democratic National Committee need to raise more than $200 million in September and October to stay ahead of McCain and make the decision to reject public funds worthwhile.

If you have $112 million to $150 million to spend per month, you’re in fine shape. McCain may still lose this campaign, but it probably won’t be because he and the Republicans didn’t raise enough cash.