“Governor Kasich has little to no chance in South Carolina, and does not have a national organization that can compete,” the memo says. “Kasich has consistently supported gutting the military and has no viable path in the Palmetto State.”

The memo also outlines hard-hitting avenues of attack against Rubio, who for months has been in Bush’s crosshairs: “Senator Rubio has lost momentum and has been exposed as completely unprepared to be president,” it says, repeating an argument that Bush has used frequently against Rubio.

It adds: “Rubio has demonstrated no respect for the nomination process and expects this to be a coronation.”