If you happen to have a contested Republican House Primary in your district (or maybe you don’t know if you do), there’s a place on-line to get a quick view of who is running. Over at a web site called New Hampshire Election Information, no affiliation with the state sites, they have a list of the contested GOP primaries and who is vying for your electoral love.
The list tells you who is new and who is not, and what the HRA ratings are for those with records. You will also see whether a canddiate has been endorsed by the RLCNH.
I can’t say if it’s comprehensive but it looks pretty complete. You will need to do some local leg work to find out about the new folks in your area yourself. But then that’s part of the fun, and no one will have more access to them than you will as a constituent.
Let us know what you find out.