I really have to wonder why McCready didn't talk about the election fraud more. It's literally the reason that there was a special election in the first place, and you know that if the parties were reversed, Republicans would be plastering the airwaves with ads about it (in and outside of this district) for years. Maybe this district just was too Republican for him to win, even against flawed candidates, but looking back I really wonder if his strategy was the best.
If he did that then he'd probably have lost anyway and there'd be lots of takes about how he should have talked about 'kitchen table issues' that matter in people's lives like healthcare. People wouldn't have changed their minds based on it, and while Trump and Republicans like whining about rigged elections lots this isn't some clearly beneficial strategy for them. McCready did fine, this wasn't a bad result overall (given this is in line with a good national environment for Democrats like 2018), but yeah this district had a heavy Republican lean and that decided the result.