Lack of experience isn’t that much of an issue for VP.
What’s a VP do? Shake hands and go to ceremonies?
The biggest job they have is tie breaker in the Senate.
That said, I think Sarah has demonstrated a mastery with OJT in the past two years.
But many discount OJT as a resume.
Few remember 1964.....We suddenly had a sitting VP become President in a matter of hours. This is always on most American voters minds. That fact alone is why many look so closely at the qualifications of the VP. Also, not too much in the past, in 1945, another VP was vaulted into the Oval Office.
It is not such a lack luster position as it may seem.