The phrase "new authorizer" refers to someone who has been given the power or authority to approve or permit something, especially in a different or recent role or position. Full definition
Under Walker's proposal, the board would include the state superintendent of public instruction and members appointed by the governor and other legislators that would have the power to create new authorizers. (host.madison.com)
The board is expected to decide in coming weeks whether to tell the six charters the district sponsors to find new authorizers. (minnpost.com)
If too few new authorizers were willing to step up to the plate, however, the legislature's move would orphan more than 100 extant charter schools, forcing them to close. (educationnext.org)