All Three Campaigns?

Here’s a blurb from the Huffington Post:

Mitt Romney Releases Gingrich Ethics Attack Minutes Before Debate

In a preview of one of the lines of attack he plans to use against Newt Gingrich in tonight’s debate, Mitt Romney released a new film about Gingrich titled “Mr. Washington Insider,” …  The film is a fitting introduction for a debate that all three campaigns say they plan to use to challenge rivals on questions of character.”

All three campaigns? I’d assume they mean everyone but Newt, since he’s the once reference here, but that can’t be right. All of these men will attack their rivals.

For the record, there are four: Mitt Romney, Newt Gingrich, Ron Paul, and Rick Santorum.