“””It is a Republican Primary. There are no rat counties”””
Correct. Only those Democrats who voted on the Republican Ballot in the Primary can vote in the Runoff.
In leftist Travis County (Austin) Cornyn leads 54 to 46 with 52% votes in.
https://www.nbcnews.com/politics/2026-primary-elections/texas-senate-runoff-results
Actually not quite correct. ANY registered voter who did NOT vote in the Dem primary can vote in the GOP runoff.