After the stunning primary loss, Castle's campaign also said the longtime congressman is not interested in waging a write in bid this November.
In Alaska, Sen Lisa Murkowski (R-Alaska) is contemplating an independent write in campaign after she lost to Tea Party backed Joe Miller in the August GOP primary.
As to whether the national party would back O'Donnell, a Castle campaign source said the campaign has no knowledge of their thinking but said "they should save their money."
Read the full story at The Hill.
This article available online at:
http://www.theatlantic.com/politics/archive/2010/09/castle-will-not-endorse-odonnell/62993/