WTF does that have to do with “Mike Castle voted to impeach Bush”?
O’Donnell was the only republican in the 2008 primary. So she wasn’t really “elected” or “selected”, she was all they had.
Her campaign manager for 2008 is now supporting Castle, because she says O’Donnell used campaign funds for her and her boyfriend’s personal use while not paying campaign workers. I have no idea whether the manager is a good person or not, but since O’Donnell chose her as campaign manager, I’ll presume that at some point O’Donnell thought she was good enough.