If she runs it wont be serious. She will do it to gain publicity. The real successor to Trump that nobody is talking about is Tucker Carlson. Tucker Carlson, like trump, has millions of dollars to spend on his campaign. He hasn't been "tainted" by political office so he can claim to be an outsider.
He understands how to manipulate the media because he comes from it, just like trump. He has a lot of in built popularity. And he is willing to tell israel to kick rocks. He also is already very popular with white supremacists in america. He literally went viral for having that gay Mexican nazi on his show.
If he becomes the 28* republican nominee, he will select marjorie as his running mate.
*assuming trump is dead by then because that is the only way you're getting an election. He is 100% not leaving office.
Tucker is too racist to win.
Vance is too dislikable to win.
America is too divided down the middle. Any candidate from either the left or right would have to appeal to the other side to take the W.H.
Tucker could run and get the GOP nomination, but his campaign would stall as he wouldn't pick up a single Democrat vote.
I think his name and face are too damaged at this point.
Tucker is from the Republican faction that hates all non Whites, and hates Jews too.
Without Jew backing and the Jew business dollars, he won't make it. Maybe hispanics will vote for Tucker, but no other minorities.