Yes, a Dem is preferable to a moderate. A "moderate" is just a Dem with an 'R' next to his name. Turning over the party -- and the country -- to those people is exactly what got us where we are today. They are all domestic enemies, but at least with a Demonrat you are getting an accurate advertisement of their leftism.
As another poster notes, two Maine moderates are blocking card check. You think it would be better if they were Democrats and passed card check? even Spector has annouced he won’t back card check...not this may be political in Spector’s case, but come on...climb down from your ivory tower and mix it up with the rest of us who live in the real world.
So you advocate advancing conservative principles by electing Democrats (incumbents are hard to defeat). Can you not see how absurd this position is?