As former Vice President Joe Biden’s campaign limps along to South Carolina after disappointing fourth- and fifth-place finishes in Iowa and New Hampshire, there’s a key issue that has been mostly absent from the campaign trail: foreign policy. With the exception of the brief moment immediately following the death of Iranian military leader Qassem Soleimani, where Democrats devoted time to foreign policy during their January debate, the issue has mostly returned to its place low on the list of voter priorities.

Democratic voters have consistently said that Biden is the best in their presidential field for handling foreign policy issues, but he has not seemed to benefit from that assessment so far at the ballot box.