The most partisan state senate districts

[muon2]

For pure Obama SDs it's hard to beat his home town of Chicago. This map has three compact districts each within 250 of 217,468. The south side ones were both over 99% Obama (99.3% green, 99.2% blue) and the west side one comes in at 98.3%. I'm sure the south side can be gerrymandered to produce one over 99.5%, but I thought the elegance of the compact districts were worth noting.

[muon2]

^I dug up the most R/D congressional threads:

https://uselectionatlas.org/FORUM/index.php?topic=186234.0
https://uselectionatlas.org/FORUM/index.php?topic=186775.0

And most of the states that have white majority D areas are going to be states with very little minority areas anyway. ME, NH, VT, ID, WY, UT, probably IA (though not 100% sure). That Alaska district is majority native Alaskan though. Minnesota, Oregon, Washington, and Montana will probably have majority white D districts (MT and OR don't have election data, unfortunately) too.

To comment on Arkansas, I was surprised to see how Republican the northern end of Lonoke County is. Its consistently ~78% McCain. I didn't even try to pull one in the NW, but someone could try.

I checked Iowa and that Des Moines district was ~55% white. An Iowa City-Cedar Rapids district is almost as Democratic, but >80% white.

You don't need Cedar Rapids. Staying within Iowa City one can make a SD with 75.4% Obama and 82.8% WVAP.