From CBS News' John Bentley:
(MINNEAPOLIS) – With only one public event today – a mere 24 days before the election – John McCain has decided to hold a rally in a state where he is down by double digits and was trounced during primary season: Iowa.
So why would he campaign here?
Because while both campaigns pay attention to public polling, but they also employ private pollsters to come up with internal numbers so they can better determine where to allocate their resources. The campaign's internal polling shows that their numbers have moved up recently in Iowa, and there's now a possibility of winning the state.
President Bush barely pulled out a win in Iowa four years ago, but McCain came in 4th in the Republican caucuses there in January, while Barack Obama was the winner on the Democratic side.