Senate District 23

Since 1993, SD 23 has been represented by Democrat Royce West.  Prior to West, this district has had some notable Senators.  For one term, George Erath represented this district when it covered Waco.  Erath County was named for him.  When this district was located out west around Wichita Falls, Democrat Jack Hightower represented it for one term.  Hightower would later serve in the U.S. House for 5 terms and serve on the State Supreme Court for 8 years.  When this district moved to the Dallas-Fort Worth area, Democrat Oscar Mauzy represented it.  Older liberals will probably remember Mauzy for his work in the Legislature as well as for his stint on the State Supreme Court:

Among the important things he accomplished was single member legislative districts in the Legislature, the 1972 passage of the Equal Rights Amendment in Texas, and the authorship of the 1989 court ruling which declared the state's public school finance system unconstitutional. Mauzy was one of the leaders of the 'Killer Bees' of the 66th Regular Session, who broke the Senate's quorum to protest legislation that would create a separate day presidential primary. 

Following Mauzy, future Congresswoman Eddie Bernice Johnson held this seat until her election to the U.S. House.

2012

President

Obama - 81.1%; 190,103
Romney - 18.1%; 42,408

U.S. Senate

Sadler - 78.7%; 181,772
Cruz - 19.3%; 44,540

Which state goes here?

Aloha, it's Hawaii.  Obama carried Hawaii by 42.71% and won this district by 63%.  Sadler won here by 59.4%.  You're probably thinking that's a pretty wide gap...42 and 63.  Let me just say, it was close.  Obama's two best performing states* were D.C. and Hawaii.  He carried D.C. by 83.63% and Hawaii by 42.71%.  The 63 point win here was .34% closer to Hawaii versus D.C.  Either way, it's safe to say this district is very Democratic.