In 2004, Democratic presidential nominee John Kerry spent big on TV advertising, in search of undecided voters in the political middle ground. George W. Bush's campaign knew they were just not there. This year's presidential campaign will be decided in so-called "swing states" -- including Florida, Ohio and Pennsylvania. It won't be decided by "swing voters." Reid Wilson, Editor in Chief of the Hotline, National Journal's daily briefing on politics, says this is a "mobilization election" not a "persuasion election."