I see it more like this: Trump leaves office in four years, but puts his weight behind Vance winning the 2028 election, and remains "the power behind the thron

I see it more like this: Trump leaves office in four years, but puts his weight behind Vance winning the 2028 election, and remains "the power behind the throne" like he was for the Republican Party for the last four years. He's going to expect Vance to take his orders. (Vance, and everyone else in the Republican Party.)