I personally don't think it's Pence.
I never saw sauce of any kind with that whole "Mike Pence/ Paul Ryan" proton mail bullshit from way back. And I don't think POTUS would keep him around this long if he was dirty.
Think about it, if Pence is a traitor, how stupid does that make POTUS look letting the guy hang around for 4 yrs, talking about what a great guy he is?
And why would the plan to "save the world" include a POS traitor as VP?
Nope.
Not pence.