Early voting for the March 6th Primaries starts February 20th and the Texas Tribune has published a Texas 2018 Hotlist: The most competitive races in this year’s election noting that overall there are 215 races on the 2018 Democratic and Republican primary ballots.
 
The following incumbents all have upcoming races on the March 6th Primary Ballot:
Senate Republicans
SD 2 Bob Hall
SD 5 Charles Schwertner
SD 17 Joan Huffman
SD 25 Donna Campbell
SD 30 Craig Estes
SD 31 Kel Seliger
 
Senate Democrats
SD 15 John Whitmire
 
House Republicans
HD 2 Dan Flynn
HD 6 Matt Schaefer
HD 9 Chris Paddie
HD 11 Travis Clardy
HD 14 John Raney
HD 18 Ernest Bailes
HD 23 Wayne Faircloth
HD 25 Dennis Bonnen
HD 47 Paul Workman
HD 54 Scott Cosper
HD 55 Hugh Shine
HD 59 JD Sheffield
HD 60 Mike Lang
HD 64 Lynn Stucky
HD 65 Ron Simmons
HD 73 Kyle Biedermann
HD 87 Four Price
HD 88 Ken King
HD 98 Giovanni Capriglione
HD 99 Charlie Geren
HD 102 Linda Koop
HD 105 Rodney Anderson
HD 114 Jason Villalba
HD 122 Lyle Larson
HD 134 Sarah Davis
HD 150 Valoree Swanson
 
House Democrats
HD 27 Ron Reynolds
HD 31 Ryan Guillen
HD 37 Rene Oliveira
HD 41 Bobby Guerra
HD 46 Dawnna Dukes
HD 75 Mary Gonzalez
HD 100 Eric Johnson
HD 104 Roberto Alonzo
HD 116 Diana Arevalo
HD 117 Philip Cortez
HD 118 Tomas Uresti
HD 124 Ina Minjarez
HD 139 Jarvis Johnson
HD 142 Harold Dutton
HD 146 Shawn Thierry
HD 147 Garnet Coleman