"But after the Obama administration offered financial incentives to states that adopted such broad standards, Common Core quickly became a stand-in for decades-long resistance to federal involvement in education.
"Republican governors who had backed the standards quickly found themselves on the opposite side of an issue from key parts of their party's base, including evangelicals, tea partiers and small government advocates. That group included White House aspirants [Chris] Christie, [John] Kasich, [Jeb] Bush and Louisiana Gov. Bobby Jindal. In the lead up to launching their bids, Jindal and Christie have disavowed Common Core, while Bush and Kasich have held their positions."
We'll have more updates soon. For more coverage of the 2016 campaign, check out Trail Guide.