The folks mentioned in the article are well known Democratic political activists. For example, New Castle Promise, which Melissa Rigazio claims to represent, appears to be one of Bill Duncan's projects. He ran against Chris Sununu in 2012 for Executive Council as a Democrat. Mr. Sununu won and is currently serving on the Executive Council.
Whether it is defending teacher unions, or publishing Democratic and "Progressive" talking points, there are many activist organizations who have their sights set on New Hampshire. Many of them apparently draw funds from out of state, and are home to a variety of Democratic candidates, staffers, and leftists of all sorts.
New Castle Promise looks like a recently erected web site, its main page cites Granite State Progress:
"Granite State Progress is a progressive advocacy organization that addresses issues of immediate state and local concern. Granite State Progress works as a communications hub for the progressive community to provide a strong, credible voice in advancing progressive solutions to critical community problems. "
Granite State Progress is made up of various Democratic staffers and union executives. Its staff includes the former president of the NH teachers union, and the president of the NH AFL-CIO among others.
Hmmmm. I checked them out. Which probably makes me their 6th reader. I’ll tell you something that I’ve noticed, though. All the obscure, unread websites in the world don’t compare to going out and talking to people.