The article also says these two books have sold 22,000 and 30,000 copies, respectively.
I think the Democratic one needed a better title. I mean, look at "Help! Mom! The 9th Circuit Nabbed the Nativity!" That's an attention grabber.
Even without books, I've managed to indoctrinate my kid. When kid was younger, kid said, "It's funny that Grandma is a Republican. She seems so nice."