Ahem, so the simple request was:
“Show me a Magisterial text that says a non-bishop (ie the non ordained) cannot be elected Pope.”
Are you saying you cannot find one?
That’s like asking if a non-citizen or an underage candidate
could be elected President.
Could they get on a ballot and garner the votes needed to be elected? It is plausible.
Could it happen licitly? No. In the case of the Pope, though, an invalidly-ordained bishop doesn’t become a bishop and therefore could not be the Bishop of Rome, even if the person was put into the office. It would be a null result.
If someone not already ordained a bishop is elected bishop–which the cardinals are allowed to do–he would be immediately ordained and,
upon his valid ordination to the episcopacy, become the Bishop of Rome. If ordination into the episcopacy were to be impossible, though, then becoming Pope is also impossible. He could not be placed into the office, the Chair of Peter would still be vacant, and another election would have to be held. The actions of the person who did not in reality have the authority of Pope would have no binding power.
As stated in Ordinatio Sacerdotalis:
Wherefore, in order that all doubt may be removed regarding a matter of great importance, a matter which pertains to the Church’s divine constitution itself, in virtue of my ministry of confirming the brethren (cf. Lk 22:32) I declare that the Church has no authority whatsoever to confer priestly ordination on women and that this judgment is to be definitively held by all the Church’s faithful .
As stated in Canon Law, the Supreme Pontiff and the Bishop of Rome are one and the same person:
Can. 331 The bishop of the Roman Church, in whom continues the office given by the Lord uniquely to Peter, the first of the Apostles, and to be transmitted to his successors, is the head of the college of bishops, the Vicar of Christ, and the pastor of the universal Church on earth. By virtue of his office he possesses supreme, full, immediate, and universal ordinary power in the Church, which he is always able to exercise freely.
Can. 332 §1. The Roman Pontiff obtains full and supreme power in the Church by his acceptance of legitimate election together with episcopal consecration. Therefore, a person elected to the supreme pontificate who is marked with episcopal character obtains this power from the moment of acceptance. If the person elected lacks episcopal character, however, he is to be ordained a bishop immediately.
Since it is impossible to ordain a woman and since one must receive episcopal consecration in order to become Pope, it is impossible for a woman to become Pope. It could plausibly be pretended, but it cannot be so in reality.