"Core supporters" refers to a group of people who strongly support or are dedicated to a particular person, cause, or organization. They tend to be the most loyal and reliable supporters who are committed to their beliefs and values. Full definition
It's exactly the reality check many Common Core supporters say was desperately needed. (americanradioworks.org)
We start with the community of core supporters before we get to a large set of end - users. (coindesk.com)
Looking back now, many Common Core supporters say they wish they'd handled the politics better, but the backlash was perhaps inevitable. (hechingerreport.org)