Georgia State Senate: 56 members total; 18 Democrats (5 white Democrats)
Curt Thompson (District 5): He represents a slice of Gwinnett County cutting from Norcross to northern Lawrenceville.
SD 5 is 38% Hispanic, 28% Black.
Steve Thompson (District 33): He represents a slice of Cobb County from Austell to Central Marietta.
SD 33 is 34% Black, 16% Hispanic.
Nan Orrack (District 36): She represents a district centered around Midtown and Downtown Atlanta.
SD 36 is 57% Black (but the whites here are very liberal).
Steve Henson (District 41): He represents a district that reaches from Central Dekalb to Tucker, and then extends a tendril into Gwinnett to take in part of Lilburn. SD 41 is 50% Black, 12% Hispanic.
Jason Carter (District 42): He represents a Decatur-based district. Tons of white liberals.
SD 42 is 24% Black, 12% Hispanic.
Georgia State House: 180 members; 60 Democrats (13 white Democrats).
Stacey Evans (District 42): She represents Southeast Marietta, in Cobb County.
HD 42 is 39% Black, 23% Hispanic.
Pat Gardner (District 57): She represents a precinct-wide strip of territory from super-black to super-white Atlanta.
HD 57 is 55% Black.
Margaret Kaiser (District 59): She represents a district like Gardner's.
HD 59 is 56% Black.
Scott Holcomb (District 81): He represents the Chamblee/Doraville area, in northern Dekalb County.
HD 81 is 35% Hispanic, 10% Black.
Mary Oliver (District 82): She represents the white liberals in the Druid Hills area north of Decatur.
HD 82 is 20% Hispanic, 15% Black.
Karla Drenner (District 85): She represents another noodle district, taking in liberal whites north of Decatur as well as blacks south of Decatur.
HD 85 is 57% Black.
Michelle Henson (District 86): She represents another noodle, directly to the East of Drenner's district.
HD 86 is 61% Black.
Pam Stephenson (District 90): She represents some territory bisected by the Henry-Rockdale County line.
HD 90 is 67% Black.
Hugh Floyd (District 99): He represents a district between Lilburn and Norcross in SW Gwinnett.
HD 99 is 52% Hispanic, 22% Black.
Brian Thomas (District 100): He represents the area just north of Lilburn in Gwinnett County.
HD 100 is 34% Hispanic, 32% Black.
Spencer Frye (District 118): He represents the northern half of Athens-Clarke.
HD 118 is 30% Black, 12% Hispanic.
Debbie Buckner (District 137): She represents the outskirts of Columbus and adjacent rural territory.
HD 137 is 52% Black.
Carol Fullerton (District 153): She represents northeastern Albany.
HD 153 is 59% Black.
(All figures are VAP for 2010 Census, taken directly from the legislature's redistricting reports)
Only 1 (probably) state Senator from majority-white district and only 3 - in House. Speaks a lot)))
So basically, Democrats are at something of a floor in the legislature, down to just black/Hispanic majority and a couple liberal white enclaves?