Pew has been doing Typologies for several decades, and this is their first revision since 2005. One of the most interesting changes is that they’ve retired their old "Conservative Democrats" typology and replaced it with "New Coalition Democrats," a sign of the changing face of the Democratic Party, one that’s younger, more urban, and more diverse. The old "Conservative Democrats"–predominantly older, rural New Dealers who are otherwise conservative–have become a smaller and smaller part of the coalition, as they’ve finally begun voting Republican or simply died; their dwindling is a large part of the fast red shift that’s occurred in the last decade along the Appalachian arc, from SW Pennsylvania and West Virginia to Arkansas and Tennessee. The remnants of this category seems to now be lumped in with the "Hard-Pressed Democrats."

The diversity between the three typologies in the "independent" column is quite remarkable. Libertarians are an overwhelmingly male group (67%!) who are more educated and secular than either group in the Republican coalition; given their generally laissez-faire attitudes, they part ways with the Republican faithful both in terms of immigration (with 52% saying a growing number of newcomers strengthens us) and religion (71% say homosexuality should be accepted). With this gulf, they tend to self-identify as independent, even though their actual voting patterns aren’t much less reliably Republican than actual Republicans.

The Disaffecteds–the least educated typology that’s majority-white–may come the closest to the unfortunate stereotype of the "independent" as incoherently angry, with their conflicting disdain for government and demand for more government aid. 73% of Disaffecteds agree that "Government is almost always wasteful and inefficient," but 61% of Disaffecteds also say that "Government should do help need even if there’s more debt" (compared with only 10% of Libertarians and 27% of Post-Moderns).

The Post-Moderns are one of the most interesting groups; they tend to be younger and more diverse than the Libertarians or Disaffecteds, and accordingly, they tend to lean Democratic. These are voters who think of themselves as financially conservative (only 27% say the government should do more to help the needy) but socially very liberal (91% of them say that "homosexuality should be accepted by society," a number on par with Solid Liberals) and also very tolerant of government’s regulatory role (91% say, "the government should do whatever it takes to protect the environment").

The Post-Moderns, unfortunately, are also the members of the Obama coalition that fell off the most from 2008 to 2010. In 2008, 65% of them voted for Obama, while 13% voted for McCain. In 2010, 17% voted for the Republican candidate, while 43% voted for the Democrat. That’s nearly a 20% gap in terms of those who didn’t vote! Contrast that with the Disaffecteds, who actively changed their minds. In 2008, the Disaffecteds broke 41% for McCain and 25% for Obama. In 2010, 50% voted for the Republican candidate, while only 12% voted for the Democrat. That’s only 6% who dropped out; the rest of the difference was switchers.

Similarly, further toward the poles, the Libertarians were characterized by switchers (53 to 14 for McCain in 2008, 63 to 9 for the Republican candidate in 2010), while the New Coalition Democrats, like the young and diverse Post-Moderns, also failed to show up (67 to 7 for Obama in 2008, 50 to 13 for the Democratic candidate in 2010). Contrast that with the actual poles, the Staunch Conservatives and Solid Liberals, whose numbers changed very little from 2008 to 2010. Add up the switchers and the droppers in all the middle categories, and you’ve got the mathematical explanation for what happened last November.

Finally, the Republican coalition is limited to two groups: the Staunch Conservatives and the Main Street Republicans. Pew points out that this is something of a realignment from previous decades; in 2005, there were three different GOP groups: the Enterprisers, the Social Conservatives, and the Pro-Government Conservatives. In the time since then, though, most of the once-populist Social Conservatives seem to have accepted the Enterprisers’ nostrums about the economy and are now just as devoted to free market ideology. This merger seems to give rise to the newly unified "Staunch Conservatives." The Main Street Republicans aren’t really that different, but are at least a little less deferential to big business: 58% of them say, "Business corporations make too much profit," compared with only 13% of Staunch Conservatives agreeing.

Pew’s description of the Staunch Conservatives, though, is "Highly engaged Tea Party supporters." That’s probably true at this point, but I’m wondering if that doesn’t quite do justice to the rise of the teabaggers. While there’s always been some meddling from GOP elites in its creation (with Rick Santelli’s famous CNBC rant as its defining moment), the initial Tea Party seemed to be an odd coalition of the Libertarians and the Disaffecteds, the GOP-leaning independents, rather than something that came from within the Republican coalition. That would tend to explain its incoherence and odd grab bag of action items at first–a mix of cold-blooded Randism/Paulism and inchoate populist anger.

Once Beltway astoturfers saw that there actually was something going on there and started pouring in resources, it seems like only then the Staunch Conservatives started piling onboard, adding more anger to fuel it as an electoral force but, from a policy standpoint, broadening it to the point where there wasn’t anything left to distinguish it from the movement conservative agenda as a whole, just with cool new branding. But the roots of that independent/Republican division in its birth still seems to linger on below-the-surface in leadership struggles within the Tea Party movement, such as the weird internecine spats between the astroturf-flavored Tea Party Express and the fringier Tea Party Patriots.

There’s a remarkable amount of detailed data in Pew’s report, and I encourage anyone interested in demographics, political trendspotting, or just making sense of who the hell we are as a country, to read the whole report. What other observations strike you as interesting? What changes to the categories (or alternate categories altogether) might you suggest? And, of course, don’t hesitate to share how you scored on the Typology Quiz yourself.