[old and tired]

I hope this translates to disaster for Cornyn.

Will it? I don't live in Texas or even an early vote state, but if I did and I wanted to oust Cornyn, I'd wait until the last possible minute to vote so I could see how the winds were blowing - I'd want to make sure I voted for the guy most likely to unseat Cornyn. A lot can happen in a primary and an early vote could be wasted.

[Gaffer]

Actually, I don’t think they’re holding multiple party primaries, are they? IOW, each precinct, whatever, only votes once for whatever party candidates, right?

If there is only one primary per party, then that’s the time to sink Cornyn in my opinion.

[deport]

How are you going to know which way the winds are blowing? No data is
published outside of total votes cast per day during early voting.

Texas has a 50% + 1 requirement to win the primary. Thus in this primary
Cornyn needs to win that amount from among all votes cast for the eight
candidates.

[thackney]

to make sure I voted for the guy most likely to unseat Cornyn. A lot can happen in a primary and an early vote could be wasted.

Not really. Texas requires 50%+1 majority to win. Any vote not for Cornyn in this race with 8 candidates pushes it to the runoff with only the top two.

[MisterArtery]

Doesn't matter who you vote for. A vote for any of the other candidates denies Cornyn a vote. No one is going to out-poll him. If his share is below 50%, he faces a run-off with the highest poller of the also-rans. Good chance the second place guy gets the rest of the also-ran vote and denies Cornyn the victory.