From NBC's Domenico Montanaro
North Carolina Rep. Heath Shuler is throwing his superdelegate endorsement to Clinton. Note that Shuler said he would back whomever won his congressional district. Clinton was widely expected to win the district (CD-11), which borders Tennesse. She did so -- by 13 points.
Shuler is one of the most conservative Democrats in Congress and won election to CD-11 as part of the Democratic wave in 2006 .
The Delegate Counts:
PLEDGED: Obama 1,588-1,422
SUPERDELEGATES: Clinton 273.5-256