I don't see how economic conservative couldn't like Gingrich. He has lots of new ideas despite being a 90s politician and he is actually an intellectual, rare in modern politics.
He likes to talk a lot, but he doesn't speak for the base and he committed a cardinal sin by cutting a tv ad with Nancy Pelosi on global warming. Turned a lot of conservatives, economic or otherwise, away from him.
The base holds that commercial against him? Sheesh.
Gingrich is very smart, but he still seems to have a bit of a stigma from the 90s. He was going to run in 2008 if he raised $25 million, but he fell deathly short of that. I'd probably support Newt over Obama unless my stock portfolio is double or triple what it is now by 2012, and my taxes are at the same level to boot.