It is possible that a significant number of undecideds are not undecided between Bush and Kerry, but undecided if they will vote for Bush or a third option such as Constitution Party, writing in Tancredo, or staying home. We need all those votes to overcome fraud. We can use all the borderlline retarded too.
In point of fact, we could tell who the campaigns really think is ahead by seeing which of them tell the undecided to stay home.