From the NFIB.com website:
In both state and federal elections, NFIB supports candidates who stand up for small business.
Candidate endorsements are made by our political action committee. Endorsements are based exclusively on a candidate’s positions and record on small business issues, regardless of party affiliation.
NFIB is the voice of small business, advocating on behalf of America’s small and independent business owners, both in Washington, D.C., and in all 50 state capitals. NFIB is nonprofit, nonpartisan, and member-driven. Since our founding in 1943, NFIB has been exclusively dedicated to small and independent businesses, and remains so today.