Needless to say, the Texas House and Senate are not going to switch parties this year.
I would predict right now that the Dems may pick up a couple of seats in the House and the Republicans probably pick up one in the Senate.
I think I know which Senate district you mean, but which State House seats are vunerable?
I don't remember the exact numbers, but for the Dems, a couple around Austin and I think one or so around Houston or Dallas that have good candidates. Obviously, the Pete Laney seat probably switches to GOP, but I really don't know if there are any more retiring rural Democrats that are good candidates for the GOP to go over.