Are you saying the electors have to have confidence in where the POTUS or VP is from? They can’t be from the same state? Never heard of that.
How does an elector KNOW where a candidate is from?
There’s a residency requirement in the 12th amendment. At least the VP or Presidential candidate much be a resident of a state other than a state’s slate of electors. It’s why Cheney switched his residency back to WY from TX to run with W. This shouldn’t be an issue for a Cain/Newt or Newt/Cain ticket since Newt resides in Virginia and Cain in Georgia.