Trump's candidate was a RINO. They should have nominated a real conservative, like Kathy Barnette, but Trump sent his minions out to destroy her.
Trump's candidate was a RINO (he was also a Pennsylvanian in name only if we're honest with ourselves), but Doug Mastriano was as MAGA as it got and he failed spectacularly (and I like Mastriano a lot as a personality). Kathy Barnette (whom I also like) wouldn't have won either.
PA is not about conservative or liberal, it's a machine state that wins or loses based on your side's machine turning out more voters than the other side.
To win statewide in PA you have to either work with the party machinery (which is largely neverTrump chamber of commerce schlubs), or you have to outwork the democrat party machinery by yourself, which is currently working so smoothly that they elected a stroke victim who, even in perfect health, was a lazy slob socialist.