The Catholic vote consists of people who call themselves members of the Catholic church, and that the Pope counts as Catholics.
Wrong. Nobody polls the Pope on these things.
The polls count self-identified Catholics.
As I've tried to explain to you multiple times, it's meaningless to speak of a "Catholic vote" if we're going to count "Catholics" who never actually attend Mass.
It's asking us to believe that someone's (claimed) faith influences their behavior in the voting booth in some significant manner, when it clearly doesn't influence their behavior at all in a matter as simple and mundane as getting out of bed and getting to Mass on Sunday morning.