Newly published letters are raising questions about how much then-Gov. Huckabee knew about a rapist's history.
WASHINGTON (CNN) - As he surges in polls, Mike Huckabee is facing renewed scrutiny over his role in the parole of a convicted rapist who raped and killed a woman after his release.
The murdered woman's mother, Lois Davidson, said she will "absolutely campaign against" Huckabee, and said she decided to come forward when he started doing well in the polls.
"It's because he is a serious contender," Davidson said. "I didn't think he had a chance, but now he's right up there in Iowa."
- CNN’s Dana Bash and Alexander Mooney contributed to this report