But the reality is they will cost themselves the Senate. But the reality is that if they lose the Senate it will be because they decided to follow him. They could have just treated his election as a way for them to get control of the courts and cut regulation without actually embracing him otherwise.
The decision to act embrace him as their savior was not up to Trump but was rather a decision of the party leadership. Once Trump is gone that decision is going to cost the Repulican party tons of elections going forward for many years to come, it seems to me.