I don't believe they will continue to run Trump if he loses in November, whether it's a blowout or close race, just losing to Kamala would virtually terminate the lifeline Trump has, politically. Republicans up top have more power than we think they do; they're just riding that lingering pulse in Trump's political lifeline until it dries up, which is likely to happen if he loses in November.
The only reason why all these MAGAs are still standing behind him is that he still has a little bit of a lifeline left, but that's drying up; once that lifeline is gone, they'll move on to another candidate when it becomes clear that they have no choice or else risk the chance of losing repeatedly to the Democrats and that's something they don't want to happen.
We have to stop this belief that Trump's hold in their party is untouchable or that his voters would seriously sit out if Trump isn't “the man”. It's like I mentioned before in another thread a week ago how as long as the GOP keeps feeding their base with the “saving the country from the Dems, yada yada,” those same MAGA voters will suck it up and ride with a new candidate especially if they have no choice.
From their point of view, the main objective among MAGA/Conservative voters and politicians is preventing the Dems from taking over Washington with their progressive and liberal policies; they're not going to jeopardize allowing Democrats to repeatedly win and win all because Trump ain't the man (candidate). At the of the day, it's all about winning and hindering the Dems/liberals from succeeding.
What a lot of y'all forget is that the majority of these MAGAs were Republicans before 2016 and they're not going to stop voting Red just because Trump isn't the man, they'll learn to suck it up as long as the GOP continues to feed them the whole “saving America from the evil liberals, etc, etc” shtick they've been doing long before Trump came into the equation and watch how all those die-hard Trumpers will fall in line because at the end of the day, from their perspective it's all about preventing the Dems from “taking over”.