U.S. Congress, District 35

If this newly drawn district holds up in court, Austin's long-serving U.S. Rep. Lloyd Doggett will face a Democratic challenge from San Antonio state Rep. Joaquin Castro.

District Judge, 167th Court

Judge Mike Lynch is retiring, opening the door for what could be a crowded race for this criminal bench. Candidates thus far include defense attorney David Wahlberg and assistant district attorneys Efrain de la Fuente and Bryan Case.

Tax Assessor/Collector

Longtime incumbent Nelda Wells Spears is widely believed to be retiring, but she says she'll announce her decision July 29.

Commissioners Court

Ron Davis (Precinct 1) and Karen Huber (Precinct 3) are up for re-election, and both appear likely to have a clear shot through the primary, but Huber's political fate in November is less certain in this GOP-leaning chunk of southwest Travis County.

Constable

Two Democratic incumbents have primary opponents: Precinct 3's Richard McCain will try to fend off Sally Hernandez, chief investigator for the District Attorney's Office; and Precinct 4's Maria Canchola will face Ernest Pedraza, an Austin Police Department commander.