Hadn't seen anything about this before. But it should be noted, in part because if it's cropped up in Idaho, it very well could in Oregon and Washington too. Meet the latest phishing scam (alert courtesy of the Idaho Secretary of State's web site):
Fraud Alert: Our office has been alerted that some people have received telephone calls offering to register them to vote over the telephone. The caller requests personal information, including your social security number. Idaho does not allow voter registration by telephone. These are not legitimate phone calls. Do not provide any personal information to these callers.