Neo-cons still mostly run the GOP, only a few of the most vociferous ones left as Never Trumpers, but many more stayed and either jumped on the Trump train or just kept quiet. Even with Trump in office, they infiltrated his administration worked either to influence or subvert Trump. Look at what John Bolton did, Trump was on the cusp of a Nobel Prize worthy peace deal with North Korea and then John Bolton goes around saying that we’re going to give Kim Jin Un the Gaddafi treatment.
If Trump can’t pull out this win, the Neo-cons are going to re-exert their influence on the party, some by overtly saying that Trump was terrible and that he caused the GOP to lose, others by subtly working to make it seem like they still support Trump’s agenda when they just want to go back to the same old thing.
If the GOP is going to stand for anything, we have to be ever vigilant and remember, we didn’t vote for Trump because we like the letter R more than the letter D. The fight for the heart and soul of the Republican Party didn’t end with Trump, it only just started.