Ben Shapiro wrote an excellent article for The Conservative Voice when he attempts to nail down why the democrats are consistently loosing elections.

Democrats claim they have consistently lost elections over the past six years based on their inability to define a platform. Democrats were for the war before they were against it; they were for social security reform before they were against it; they were for sexual impropriety by politicians (Bill Clinton, Gerry Studds, Barney Frank) before they were against it (Mark Foley); they are unsure about the morality of gay marriage, but will slander those who oppose it. Democrats are consistent on two issues, and two issues only: abortion and tax cuts. They’re for the former and against the latter. Which is, of course, why Democrats have not fully defined their platform: Their platform is unpalatable to most Americans. Ambiguity is a better option than clarity.

I have nothing to add other than a suggesting you stop in and have a read.