This is a good list of reasons of why it happened.
Though I would add that Bush (and the GOP) not backing up the Bush Doctrine when Israel tried to apply it against Hizbollah should have been included. If you’re not going to back up your own “doctrine” then don’t have a doctrine, you half-assed pansies.
Annika adds… I would also add that Katrina, at least as mis-reported by the media (which ignored the positive non-NOLA aspects) increased general dissatisfaction with the government among the middle third of voters.
UPDATE: Insty keeps adding good stuff to this post. By the time it’s done, it will be the definitive pre-and-post-mortem of the GOP’s many miscues (leading to the highly likely loss of power in both the House and Senate) over the last several years. It’s interesting that Captain “Not-One-Dime” Ed seems to be eager to tow the GOP line when it gets close to election day. He is far too wise to ignore the fact that the GOP has still not earned that one damn dime back.
Insty sums up the main problem with the GOP with classic deftness:
If you have anything to add to the list of GOP dropped balls, please chime in, because there have been so many that we’ve surely forgotten a few.