What counties are the most ideologically liberal or conservative?

[GregTheGreat657]

I'd say that Chittenden, VT, Multnomah, OR, Hawaii, HI, and San Francisco, CA are the most liberal counties, and a place like Roberts, TX is among the most conservative

[TDAS04]

For the most ideologically liberal counties, Boulder, CO might be one. There's also Marin, CA.

In New England, Hampshire County, MA and Windham, VT are probably better examples than Chittenden. In the nation's other upper corner, San Juan, WA is another great example of a very liberal, overwhelming-white, rural county. It voted for gay marriage with the largest majority (71%) in the state, during the 2012 referendum.

Dane, WI is very ideologically liberal for the Midwest, but probably not one of the most liberal in the country.

[Okay, maybe Mike Johnson is a competent parliamentarian.]

In New England, Hampshire County, MA and Windham, VT are probably better examples than Chittenden.

Indisputably. I have it on good authority that Burlington has the kind of genteel homeownership politics that at certain points in the political histories of Amherst and Brattleboro could get you stoned to death on Lottery Day.

[Sol]

It's a pity that Contra Costa and Alameda Counties are divided north-south instead of northwest-southeast, because a county running from the Carquinez Bridge south to Fremont, and excluding everything west of the Berkeley Hills, would probably be the strongest contender for most liberal in the country. As it stands, Alameda is by itself a pretty good contender.

In the Bay area, there's a decent argument for San Francisco and Santa Cruz too.

In the south, Orleans Parish LA, DeKalb County GA, Orange/Durham Counties NC, and Charlottesville City VA are the strongest contenders.

[ProgressiveModerate]

Some of this is subjective because what does one even define as liberal or conservative.

While large urban counties in places like the bay area are very blue, and are def liberal through some lenses, I'd argue in a lot of ways people's economic politics and NIMBYism is more Conservative.

I'd say Dane County is a solid candidate for being very liberal through multiple lenses. Obv votes very blue, even in rural areas, but also Madison is being built with a relative sense of density and economic inclusion compared to places like the Bay Area. Also doesn't have the same sort of big corperation/bank culture as a place like NYC. It's also clearly a place where Democrats outrun topline Demographics by *a lot*

[Interlocutor is just not there yet]

I'd throw in Humboldt County, CA for most ideologically liberal

[Skill and Chance]

College grads are inherently more ideological on both sides, so I think the answer is going to involve places with a high concentration of them supporting one party over the other, not simply where each party gets the most unanimous support.

For Republicans, I would think the answer is pretty clear: a culturally Southern exurb where they get ~75% support in most electionss.  Montgomery County, Texas comes to mind.

For Democrats, it's either a college town or an area where most people do politics for a living.  Dane County, Wisconsin has both.  If you want total dominance by a culturally left-leaning college, Charlottesvile City, Virginia come to mind, but that's arguably cheating.  The other possibility is one of the more upscale areas adjacent to D.C., like Arlington County, VA or Montgomery County, MD.  However, with so many families making >$200K there, it really comes down to how you define ideologically liberal.  They sure aren't voting for 70% income taxes, but they might hate Trump more than anywhere else.