You'll have a new president in 2028, be it Vance, Shapiro, or Oprah Winfrey. Either way, it won't be DJT.
Now, with additional concentration of power, that increases the possibility of a successful overturning (in favor of a new conservative candidate), or simply a biased election.
Dictatorships often have elections and are supposedly democratic. The question is whether those elections reflect the genuine, informed self-interest of the people.
And US elections have been very tight, and the electoral college means that only a few states being controlled is enough.
We also lack an apparatus to overturn a fraudulent election. Even if a judge rules that an election was fraudulent, that's not the same as certifying another vote total nor can it physically remove someone from office.