At least double Trump's numbers and this poll is probably accurate.
This reminds me of what I consider the misguided logic that Tender Branson used to bring to the 2024 GOP primary polls….it went something like:
1) Trump has a very high favorability rating among Republicans, and yet 2) Trump is so obviously a terrible person and terrible president, and therefore 3) all of those people who give him a positive favorability rating must be part of a cult that’s specific to Trump, and they would never prefer some other Republican over Trump. And so 4) any poll that has Trump at less than 90% support among Republicans for 2024 must be wrong.
But that’s absurd. In no way do 1 and 2 imply 3. Many Republican voters like Trump, and dismiss his flaws because he’s on their side in the culture war, and they like him because of either particular cultural grievances or particular issues, or just because he has an (R) next to his name. But that doesn’t mean that 100% of them will always prefer him over some other Republican, who’s also on their side in the culture war, and with them on the issues, etc.