It appears, although who really knows except Donald Trump, that the VP nod could go to either Newt Gingrich or Jeff Sessions.
Based on Trump's stated desire of having someone who knows D.C. and can assist him with his legislative program, these two gentlemen more than fill the bill.
Further, they add gravitas and experience and could step into the presidential role with ease if, God forbid, a calamity arose, which given America's history of such things, is always a possibility.
Looking further ahead either man would be ideal if Governor Palin considered a future political career, something she has always said is a possibility.
She may be offered a cabinet role in a Trump presidency "I would love to have Sarah in my administration" Trump advised, or may prefer to grow her show business career as "Judge Sarah" which TV pilot is currently in the works.
The latter by no means precludes an eventual presidential run as Ronald Reagan and Donald Trumps career path prove, in fact the high visibility is an asset in this media age.
Presuming Trump wins in November, and either Gingrich or Sessions are his VP, then the possibility arises that by 2020 either will look to retirement. If that were the case then Palin as Trump's re-election VP would add a vigor and a dynamic and the timing for a woman VP, without it being seen as "pandering" (as Hillary would be out of the picture) might be ideal.
It is of course not uncommon for a president to have a different VP in their second term, FDR had three VP's across his four elections, Lincoln had two, McKinley and Grant had two for example so a change, especially based on age, would be perfectly normal and acceptable.
Further, at the end of Trump's second term a Palin vice-presidency would leave her in a very strong position to mount a presidential run of her own in 2024, she will be a youthful 60, mature, experienced and a proven administrator in such a scenario.
Conversely, should Trump not be re-elected in 2020 then neither Gingrich nor Sessions would be the automatic front runners for the presidential candidacy. Not only would they be too old, but would have been tarnished with having been part of an administration which had not been returned. Again, Palin, especially if she was not in the administration, or had been an effective Secretary, would be ideally placed for a run.
If the VP choice is Pence or Christie then the challenge in 2020 for Palin would be difficult if the Trump second term had been a success. But if it had not been successful, or Trump was not re-elected in 2020, then the same opportunity would apply.
We shall all be enlightened shortly but, in my opinion if it is either Newt or Jeff then Palin's long term opportunities look bright