Nothing in from Webbe yet. Is Webbe the most populous county?
Percentages are Anglo, Black, Hispanic, Black+Hispanic, Other. Percentage in parentheses is percentage of county in district.
Atascosa (100%) 38,628 39.6 0.7 58.6 59.1 1.3 (suburb San Antonio)
Bexar ( 20%) 285,459 49,841 17.5 11.3 70.5 81.3 1.3 (San Antonio)
Comal ( 18%) 14,050 40.0 1.9 56.9 58.5 1.5 (New Braunfels, suburb SA)
Frio (100%) 16,252 20.6 5.0 73.8 78.6 0.9 (rural)
Guadalupe (100%) 89,023 59.4 5.4 33.2 38.4 2.3 (suburb SA)
Hays ( 59%) 57,125 49.4 6.2 42.5 48.3 2.3 (San Marcos, suburb Austin)
La Salle (100%) 5,866 19.0 3.6 77.1 80.4 0.6 (rural)
McMullen (100%) 851 1.2 33.1 34.3 0.4 (empty)
Webb ( 52%) 99,776 3.5 0.4 96.1 96.1 0.3 (Laredo)
Wilson (100%) 32,408 (suburb SA) 60.9 1.4 36.5 37.8 1.4 (suburb SA)
Zapata (100%) 12,182 14.5 0.5 84.8 85.0 0.5 (south of Laredo).
The suburban counties have a lot of small towns, with people commuting into San Antonio more than outgrowth from San Antonio. Most of what you would think of traditional suburban growth is in northern and western Bexar County, much within the city limits of San Antonio (which is larger than Pittsburgh, Cleveland, and St.Louis combined). Guadeloupe and Comal counties have very strong German/Republican traditions dating back to the 19th century.
San Marcos is the site of a Texas State University-San Marcos, which has around 25,000 students. It is primarily a teacher's college, so won't be as liberal as UT-Austin, and students probably won't turn out for an election like this. LBJ is the most notable graduate of TSU-SM (formerly Southwest Texas University).
Webb County is split between two districts, 28 and 23, which also includes parts of Bexar County and stretches west to El Paso. Laredo is one of the fastest growing cities in the US, and something like 40% of overland imports from Mexico come through Laredo.