Here paleoish conservative blogger Daniel Larison discusses Edward Luce’s Financial Times article on Americans Elect. (Registration is required to get to the actual FT article.) Suffice it to say that Luce is hopeful and Larison is not.
The volatility inside the GOP primary electorate does not mean that there would be automatic support in polls for a “centrist” third-party challenger. When “very conservative” voters launch a half dozen candidates into fleeting contention with Romney because they cannot abide the former governor, it does not follow that there is an opportunity for a “centrist” candidate to poll in double digits.