Because, like most other things, Republicans just sit back and let the left define the terms, instead of painting them as the extreamists.
I suspect many Republican voters are lazy as hell and can’t be bothered to get out and vote in off-year elections, for minor offices, or for referendum votes like this.
How can you say Brown will be unseated when in the next breath you say conservatives/republicans sat back and let the left define the terms. The pro 1 forces advertised the extremism failure would cause, yet it was defeated. Would the same hold true for Brown? If LaRose is the ultimate candidate for the Republican Party in 2024, it will be easy to tag him with this issue and how he handled it for the pro choice folks.