I cannot address Byrne (who appears to be the candidate you are talking about), but Governor Ralph Northam of Virginia did explicitly talk about this in public. This came out just before Northam's college yearbook photos hit the media and I said at the time that this was more outrageous than the yearbook photos.
On 1/30/2019, on WTOP’s Ask The Governor, VA Democrat Governor Ralph Northam defended the VA Dem’s 40-week abortion bill saying,
"Delivered" means outside the mother's body, no longer attached to the mother, I would argue.
So if the family did not want the infant to be resuscitated, the doctor would let the infant die. And if, after the conversation with the family, if they wanted to let the infant die, the doctor would let it die.
You may not like the procedure Northam described, but he is talking unambiguously about letting a
delivered infant die
postpartum.