Why doesn’t Trump spend his time and energy attacking Biden and Democrats? What’s the point of these constant criticisms of an ally in the Republican Party?
Because there will be a primary and that is where it begins. Happens every election because the primary is what you have to win first. RATs attack RATS.
Repubes attack Repubes. Then they attack the other party.
I believe he had sixteen of those allies trashing him in the 2016 primary.