Today’s primary runoffs in Texas will put Trump’s endorsement to the test again — the latest step in a mission to punish some incumbent Republicans Trump has deemed insufficiently loyal.

Texas also has a slew of House primary runoffs on tap today, including one in a battleground district where a secretive group with some Republican links has spent to boost a controversial Democrat. Two Democratic incumbents could also lose House primaries, and a handful of winners in solidly Republican seats are likely to be heading to Congress next year.

Polls in most of the state close at 8 p.m. ET, and the full state closes at 9 p.m. ET. Here are the major races to watch.Read the full story here.