Sarah Palin’s speechwriter and domestic policy adviser Rebecca Mansour mocked Bristol Palin, Mitt Romney, and redstate.com contributor Erick Erickson in a series of leaked Twitter messages.

Red State Editor-in-Chief and CNN contributor Erick Erickson is “a total douchebag,” wrote Palin speechwriter and domestic policy adviser Rebecca Mansour in a May 22, 2010, message. “Greasy dumb ass with a talent for self-promotion. He threw himself in at the Gov’s SC rally. Self-promotion.” (Erickson said South Carolina Gov. Nikki Haley invited him to the rally).

Mitt Romney supporters are “wacky as hell,” Mansour wrote, but usually Romney’s presence online is just an “AstroTurf brigade.”

“Would love to tell Mitt’s lackeys to stop backstabbing my boss anonymously,” Mansour wrote. …

The messages show that, at least last summer, Palin was planning to run for president and calculating her political moves with a run in mind. …

But by far the most incendiary messages are about Palin’s daughter Bristol. Sent in the aftermath of Bristol announcing to Us Weekly she was planning to marry Levi Johnston, Mansour wrote, “I wish they were the Cleavers too. But it’s life.”

“Two words: Patti Davis. Okay three more: Ron Reagan Junior. Two more: Billy Carter. Doesn’t your family have one?” Mansour said.

“She will hold her at arm’s length. Even Thatcher was never able to disown her screw up son Mark. It’s a Mom thing,” Mansour wrote.