Mind doing Tyler or Longview?
Did the quick and dirty 2016 numbers on DRA (approximation):
Tyler, TX
Trump 22251 (58.8%)
Clinton 13750 (36.3%)
Other 1852 (4.9%)
Longview, TX
Trump 15750 (64.1%)
Clinton 7997 (32.6%)
Other 820 (3.3%)
It's safe to say neither flipped in 2020. Both Smith and Gregg each only swung 4 points to Biden compared to 2016.
I know that there's no way either one flipped, but would you mind looking at Odessa and Wichita Falls?
Odessa, TXTrump 19708 (68.5%)
Clinton 8048 (28.0%)
Other 1014 (3.5%)
Wichita Falls, TXTrump 19990 (69.0%)
Clinton 7583 (26.2%)
Other 1398 (4.8%)
Wichita County swung by 8.4 points to Biden in 2020; Ector County swung to Trump by 7.4 points. I wouldn't be particularly surprised if Wichita Falls saw Trump drop into the low 60s in 2020. Trump probably cracked 70 in Odessa against Biden.
Wichita Falls municipal/precinct boundaries are quite messy and so I'd put a margin of error on it greater than the other 3 (the difference between including precincts split between city/unincorporated versus not is like one-quarter of the city's population: I included them).