The TDP has no hand in who runs or who doesn't. There are no endorsements or a slate put together before the primaries. However the Republicans of Texas do manipulate their elections and make endorsements. Where the Democrats intervene comes out of DC, not so much in written or spoken endorsements, but in funds provided to their accounts. I have a hard time thinking that the staid OG DNC led by Schumer and Jeffries have tapped Crockett. I'd more likely imagine they are withholding money in the Texas Senate Race until after the winner of the primary comes forward.
Michelle Davis of LoneStarLeft wrote a pretty good piece on several things to consider if Crockett decided to run, and the biggest takeaway is she will bring out the voters who want to vote against her. She is basically another version of AOC and we know how the Trumpkins hate her and would show up in droves to vote against her. Same with Crockett.
But on the other hand with Allred laying out now, the race really comes down to Talarico and Crockett. My biggest hope is that Talarico wins a tight primary and the Trump haters decide that their vote won't be needed against Talarico, so they stay home.
I would have no problem with either of them winning, but it will come down to who is most electable. And either way we have at least one, maybe two good leaders won't be in office when we need it most. But change is needed, so let's ride.
Please just remember that the TDP isn't building benches or choosing candidates other than encouraging good people to run. Unfortunately we can't discourage anyone from running either. That is left up to PACs and other well funded donors. TDP's job is to insure fair elections, to register voters and get them to turn out. Sometimes that GOTV effort is a text, or a phone call, or an event, with or without candidates in attendance/participation.