The President certainly was not so naïve as to fail to anticipate this possibility -- for, if there's one thing any US President learns quickly to anticipate, it is the immediate leaking of everything they say to anyone anywhere at anytime. On top of this, Trump was speaking to a man he already knows to be disloyal.
We must therefore understand that the President was knowingly speaking to the whole world.
Your error is the assumption that the subject of the President’s persuasion efforts was Raffensberger.
Raff or his people certainly leaked it.
The President certainly was not so naïve as to fail to anticipate this possibility -- for, if there's one thing any US President learns quickly to anticipate, it is the immediate leaking of everything they say to anyone anywhere at anytime. On top of this, Trump was speaking to a man he already knows to be disloyal.
We must therefore understand that the President was knowingly speaking to the whole world.