Clinton re-raises, ever so subtly, the notion of just how pledged the elected delegates are.
"Even elected and caucus delegates are not required to stay with whomever they are pledged to."
Innocent remark or another trial balloon (on a topic already raised and shot down)?
Plus: Former DNC chair and Clinton supporter sends memo to Democratic superdelegates encouraging them to vote their conscience.
Steve Grossman: "Superdelegates were not selected by the national party to be either potted plants or rubber stamps."
