Of course there will be exceptions. But when it comes to the main bodies of the Republican Party -- basically, elected politicians, party officials, and of course, Fox News -- I'll stand by that answer.
Every once in awhile, someone will post about the latest development of some Trump scandal and say "this is the beginning of the end of the Trump administration". What makes it different? It varies.
- It might be that the investigators leading the charge are unquestionably non-partisan, or even registered Republicans themselves;
- It might be that the scandal implicates some issue area allegedly near-and-dear to the GOP base (e.g., a sex scandal turning off religious conservatives);
- It might simply be that the findings are just too explosive to ignore.
So let me make it clear: It won't happen. There is no amount of Trump malfeasance that will cause Republicans to turn on him en masse. A murmured word of caution here, a "ill-chosen words" there, but that's it. That's the lesson of the past several years -- I have no idea where anyone gets misplaced optimism that something just has to change as things get worse.
If the investigators are Republican -- guess what? Now they're "the deep state"! If it seems to impact the GOP base's precious moral values -- forgiveness is limitless (if you think GOP conservatives actually care about family values in any context where it isn't smashing gay couples, I have a bridge to sell you).
If it threatens basic notions of national security, electoral integrity, or core American values -- well, we're getting a crash course in just how little the Republican Party and its various apparatchiks care about those things. Which is to say -- virtually nil.
The only way this might change is if they're punished sufficiently at the ballot box (among the most disastrous consequences of the 2016 election was that it taught Republicans that limitless brinksmanship, conspiracy-peddling, and open racism would not be punished by the electorate). At which point it would be moot anyway. But I suspect even in the minority the GOP will continue backing Trump to the hilt -- investigations are witch-hunts, oversight is government propaganda, hearings are grandstanding.
Don't depend on the GOP to turn on Trump. They won't. They're his. And so right now, if you ride with the GOP, you ride with Trump.