Thursday’s Republican debate offered candidates another chance to tackle a big issue that’s been monopolized by the Democrats: how to rein in the dauntingly high cost of going to college. In every Democratic debate, the candidates have talked at length about how to grapple with the rising cost of higher education. So where do all the candidates stand on the issue?

WATCH: WGBH's Adam Reilly reports on the cost of college and the 2016 election.

Hillary Clinton has proposed free public education for some students.

Bernie Sanders wants free public education for everyone.

Martin O’Malley thinks both private and public higher education should be debt-free.

John Kasich has, so far, been the Republican most vocal about college costs. 

Marco Rubio frequently cites his own struggles with student debt, but his preferred solution seems to be convincing more kids not to follow a traditional, private, four-year college education path.

Donald Trump has vowed to revamp the student loan system, though the details are murky.

Jeb Bush recently unveiled a new college plan of his own. The big idea: give every high school grad a $50,000 line of credit and link repayment to income.

Mike Huckabee has said the cost of college threatens middle class families, students and the American dream but doesn’t believe in free public education. He thinks there should be a way for students to refinance their loans the same way auto or home loans can be refinance.

Aside from saying that “ student debt is bad,” Chris Christie hasn’t spent much time on the topic of college affordability.