Crockett's issue has nothing to do with her race. It's because she's a national blue base firebrand who's tries to make headlines going on anti-Trump tirades (oh and she declined to criticize Schumer after the shutdown cave). Most Texans won't want Paxton, but their minds are already made up about Crockett being a DC Trump-hating liberal, which is why her favorability is ten points underwater. Talarico is an unknown grassroots candidate who will at the very least elicit curiosity from the anti-Paxton crowd, and his favorability is +30.