Mastriano could very well Youngkin this. Now that the primary is over, it is likely he will focus on economic issues, and anti-Covid-restriction stuff instead of dedicating his campaign to the 2020 election. If Shapiro mainly focuses his campaign on Jan 6 and "democracy" similar to McAuliffe, I think Mastriano pulls it off considering Pennsylvania is a redder state than Virginia.
Well Youngkin was clear enough politically that McAuliffe was just talking about unrelated things to Youngkin. Mastriano has tons of legitimate baggage related to that. He's also insane and Shapiro isn't McAuliffe.