As Limbaugh pointed out, they were bused in GOPes. But you will slather up to anyone if you think they are taking down the guy, your guy can't take down. And for the record, Trump ain't getting booed except for GOPes and wacko Dems... nice company.
Trump IS a Democrat. They will not boo one of their own.
Proof? None. It is much more likely that Trump is getting booed because he deserves it.