[Leaning Right]

you need to know which three delegates in each congressional district are bound to each respective candidate

I looked over the ballot. Thanks for the link. My question: Are those "three delegates" you referred to actually bound to a candidate, or are they just on record as favoring that candidate?

I've read elsewhere that those PA delegates can vote any way they wish, even on the first ballot. So there seems to be plenty of opportunity for trickery.

[Vigilanteman]

. . . just on record as favoring that candidate . . .

And even then, usually being reluctant to state so publicly for fear of alienating potential voters. It is mainly name recognition on the local level which gets them elected as delegates.