Will the Democratic Party Capitalize on GOP Troubles?

How can the national Democratic Party best capitalize on a cracking GOP? What should it's strategy be? Some good analysis on the matter is at LegalFiction, such as this:

When you get down to it, the only real glue holding this coalition together is hatred for liberals. As Yglesias said yesterday: “A gut-level hostility to liberal elites is not a governing philosophy.” No, but it’s heck of a way to keep an otherwise incoherent political coalition together. “Conservative” means so many things today that it’s hard to find any essence to the concept anymore.

“Conservative” seems only to have negative meaning – that is, it is defined by what it is not, rather than what it is. And what it is not is the despised liberal elite, or Howard Dean, or Ward Churchill, or John Kerry, or Bill Clinton, or Dick Durbin, or whoever the designated “Other” for the week happens to be.

By staying on the sidelines (at least for now), Democrats rob Republicans of the opportunity of creating an “Other” to rally against – which is really the key to their recent success.