How on Earth do you figure? "False flag" gets thrown around way too much. Conspiracy? Yes. "False flag?" Not likely. This was an assassination attempt.

They were an inch away from blowing his head off on live TV.

Was it planned by the Republicans that like Trump to drum up support for Trump?

No, again, they almost blew his head off. This was an assassination attempt.

Was it planned by the Republicans that hate Trump in order to get rid of him and instate their own puppet candidate?

That wouldn't exactly be a false flag, which is not to say they wouldn't obscure the shooter's motives. This was an assassination attempt.

Was it planned by the Democrats to eliminate their biggest political threat?

Assassination attempt.

Or was it planned by the Democrats not only to eliminate Trump, but so they could then have another "crazy MAGA" guy go and shoot Biden in revenge...?

Possible. Still not a false flag. Assassination. Attempt.

Also, was it planned for him to survive from the beginning...?

Again, they shot him in the head. No one is that retarded. Assassination. Attempt.

did they actually intend to kill him?

Yes.