From the article:
Apparently their strategy is shore-up-the-base. The problem with an all-base strategy is that you have to ultimately win over independents and moderates. In 2000 Bush did that with his "compassionate conservative" message, and in 2002 and 2004 appealed to Bush's response to 9/11. This year people are looking at Bush's actual record of ultra-conservative politics and his failed record in Iraq, and independents and moderates aren't going to go along with that. The key of course is whether they turn out to vote.
It's interesting how Bush said that he thought "Washington" had already decided the race (irony)... 2000, Bush said something very similiar, on election night when ABC, NBC and CBS had called Florida for Gore, reporters asked Bush why he thought things were not going so well, and he said something like "The networks have already called the election..." and then urged listeners to turn to CNN: "I'm watching CNN now," he said. I'll never forget that. I was watching CBS upstairs in my parents' bedroom, and after that I wondered what Bush went so I went downstairs to turn on CNN... and they had Florida colored in gray.