of course the libs will endorse his nomination. because if he gets it, the following week the dem nominee will file against his eligibility... and win easily. leaving the GOP scrambling for a replacement, which would have very little momentum. for elections decided within a 5% margin, this would hand them a landslide.
and it wouldn’t impact 0bama as SCOTUS would rule being born within another country invalidates his eligibility. this would leave 0bama’s eligibility intact and would ring true to joe-average (tho it’d still leave the question open on whether or not a NBC needs 2 US citizen parents at birth)
I’ll leave predicting the future to you. I prefer to look at facts: what has happened and what is happening now.
Based on what has happened with Obama and the theory that he was not born in the U.S., the challenges to his eligibility helped him with undecided voters more than it hurt him. That’s why he wanted to keep the issue alive rather than resolving it.