Ok, but you won't like my conclusions.
I think a lot of the Hispanic community is basically done with the Dems because of their hard turn left. It is showing in polling done along the border counties. And Flores election is a result.
We will know more in November.
Yes, one Republican won in a district that usually goes for Democrats.
But let’s look at the biggest factor: turnout.
The last election in that district had a Democrat win with over 111,000 votes. This election was a special election and the Republican won with under 15,000 votes. She ran on a far-right platform (including QAnon craziness) in an election ignored by most Democrats but watched by many far-right wingers specifically because of her going as far right as possible. In an election with turnout 85% lower than usual, this was a winning strategy. In the November election, her chances of winning are slim-to-none.
Also, the Flores campaign out-spent the other (Sanchez) campaign 10-to-1.
Now, why would they do that, especially if they are almost certain to lose the seat back to the Democrats in just a couple months?
Publicity. You’re talking about it as some sign of things to come. I saw many news outlets, including all the ones you’d consider “liberal” talking about it too.
I’m not sure if the spending was worth it for the GOP, or if it was wise for the Democrats to ignore the race almost completely.
But even the GOP redistricting committee didn’t think holding the seat was sustainable, because they gerrymandered the district to make it more “blue” in order to secure other “red” districts moving forward.
It’s not wise to claim some national trend when somebody wins one seat by a narrow margin in an off-season election with a minuscule turnout.