Texas Conservatives are manipulating the vote with “legal” actions and can only affect percentages.

It goes beyond that.

PoC districts often get voting machines that don't work. Urban districts will have large pools of ballots that go uncounted because of deliberate delays in the vote count (similar to what Republicans managed in 2000 with the Brooks Brothers Riot). Judges remove candidates from the ballot for arbitrary reasons (Tom DeLay would routinely run uncontested because his opponents' petitions to fill would get "lost" or "misfiled'" by the country clerk).

This is only legal in so far as local allied politicians allow it to be.