Does Scott Walker have a Common Core problem?

And after declaring in 2013 that “we’re doing Common Core in New Jersey, and we’re going to continue,” New Jersey governor Chris Christie said earlier this month that he has “grave concerns” about the program, “especially the way the Obama administration has tried to implement it through tying federal funding to these things.” New Jersey’s Study Commission on the Use of Student Assessments is now reconsidering the standards.

Meanwhile, former Texas governor Rick Perry and Texas senator Ted Cruz have opposed Common Core from the beginning, as have Florida senator Marco Rubio and Kentucky senator Rand Paul. Jeb Bush, former Florida governor, has been an unyielding supporter.

Political conversions are always problematic for politicians on the campaign trail, but on an issue as toxic as Common Core — one where not the position but the intensity of the position is key — the appearance of a politically expedient change of heart could prove harmful.