Des Moines, Iowa (CNN) – Newt Gingrich will hit GOP presidential rival Mitt Romney as a "timid Massachusetts moderate" in a New Hampshire newspaper ad on Wednesday. The full-page ad, set to run in the influential Union Leader, comes less than one week before the state's first-in-the-nation primary on Jan. 10. The Gingrich campaign intends to release television ads in the same vein this week. On Tuesday, Gingrich also said he will run ads in the early primary voting states of South Carolina and Florida, which hold their contests later this month. Calling himself a "bold Ronald Reagan conservative," Gingrich...