If McCain or Palin return to WI, you’ll know both campaigns are seeing internals way different from the media polls.
There is no way Obama would be campaigning in WI if he had the big lead that many (bogus) state by state polls says he had. In both of the last two Presidential elections, the vote was extremely close. Kerry won the state by only 11,000 votes (out of almost 3 million cast). In 2000, Gore won by only 5,000 votes out of almost 2.5 million.
McCain wrote off Wisconsin last week. RNC, too. I doubt they're doing any more internal polls.
McCain has all but quit doing tv advertising since some time last week.