There's a basic quirk to primary voting in the Lone Star State which people from elsewhere may not fully understand. I’m just going to give a brief rundown here, for the benefit of anyone who may be wondering why things are a bit weird.
As those who were following the results last night noticed, there were more precincts counted in the Republican primary than there were in the Democratic primary. This is because the voting is arranged by county, and some counties, mostly the thinly populated ones in the ranch country outside the big cities, with lots of space between very small towns, choose to run things as they see fit, and may simply choose not to run a Democratic primary "because no one here votes that way anyhow."
One of my friends used to live in a small town in such a county out in the Texas Hill Country, and she was told during the 2016 primary election cycle that if she wanted to vote for a Democrat (i.e. Hillary), she'd have to drive to Austin to do it. She didn’t raise a fuss, because she understood how things work in a small town, and she knew that the entire town would shut down against her — no groceries, no gasoline, no service at the cafe — if she did. (She later moved out of Texas entirely, but that’s another story.)
This county-dependent quirk in Texas primary elections means that more precincts and more citizens voted in the Republican primaries than in the Democratic primaries last night. Some of the Democratic candidates — notably Beto O’Rourke — have been working hard in these isolated counties, but many of the voters in these places simply won’t have a chance to support him until the general election, when both political parties will be on the ballot statewide. Of course these small-town citizens voted for Republican candidates last night, because Republican candidates were the only available choices.
There’s still a long road ahead, but we might get there yet.