Idaho has no anti-SLAPP law.
Note: Coeur D’ Alene resident and blogger Bill McCrory discusses efforts to persuade a state legislator of the need for such a law on his blog: OpenCdA.com.
Idaho SLAPP Stories:
"Mother Jones, the well-known, politically-focused publication, has prevailed in a ridiculous SLAPP suit filed by billionaire Frank VanderSloot. VanderSloot was upset about a 2012 profile that Mother Jones published about him, his multi-level marketing, dietary supplement company Melaleuca, and the millions of dollars he was donating to Mitt Romney’s presidential campaign. VanderSloot insisted that the article was defamatory, though you’ll have to squint really hard to figure out where and how.