The districts are currently drawn to elect the most Democrats possible. The fact that some incumbent Democrats are getting re-elected in districts that are slightly Republican only proves the power of incumbency and the enormous campaign warchests that can be built up.
The truth is that Republicans have been making gains in Texas despite Democrat gerrymandering. Otherwise, we would never have taken over all the statewide offices and both houses of the Legislature. We have been working hard.
But why in the world should we be electing representatives to the US Congress on maps drafted by our enemies? We lived under their tyranny for 130 years. Can we please get to draft the maps just once?
Personally, I'd prefer a system that's as close to neutral as possible. I believe a couple of states (maybe Iowa) have this. Right now I live in a city that's been divided into three districts for no reason other than to get more of one party elected. Some precincts have even been divided. I don't care who's doing the line drawing, this flat-out sucks. (In this case it's the Republicans getting their revenge for years of Democrat gerrymandering).