Criminal defense attorney, Manuel Diaz Law Firm, PC

Courtney Miller is a criminal defense attorney at the Manuel Diaz Law Firm, PC, and a former felony prosecutor in the Collin County District Attorney's Office¹². She is the Democratic nominee for judge of the 432nd District Court, a felony criminal court in Tarrant County¹³.

• Criminal defense attorney, Manuel Diaz Law Firm, PC; the firm says she joined in 2021 to head felony cases in the western part of the Dallas-Fort Worth area¹²
• Former prosecutor in Collin County, beginning in 2006 as a misdemeanor prosecutor and advancing to misdemeanor court chief and felony prosecutor, before leaving the District Attorney's office in 2008 (per her law firm profile)¹²
• BA in English, Texas Christian University, 2002; JD, Texas Tech School of Law, 2005 (per her law firm profile)²
• Not a sitting judge. She is the Democratic nominee on the November 3, 2026 ballot for the 432nd Judicial District¹³.
• Bar poll: Tarrant County Bar Association 2026 Judicial Candidate Poll (Jan 6 to Jan 29, 2026; 441 of 2,026 eligible attorney members voted, 21.8%). This is a non-binding poll of lawyers, not an endorsement by the Association. Results for Courtney Miller: Strongly Recommend 17.7% (33), Recommend 10.2% (19), Neutral 7.5% (14), Not Recommend 8.1% (15), Strongly Not Recommend 12.4% (23), Skipped 44.1% (82) (percent of the voters who chose that race category, with vote counts). The poll was taken before the March 3 primary⁴⁵.