In Delaware, veteran Rep. Mike Castle, a moderate, vies with Christine O'Donnell for the nomination for a Senate seat.
As reported yesterday, O'Donnell has surged ahead of nine-term Congressional incumbent Mike Castle in Delaware's Republican Senate primary, much to the distress of the party's leadership.
O'Donnell has the support of former Alaska Gov. Sarah Palin as well as tea party activists.
New Castle County Executive Chris Coons has no opposition for the Democratic nomination.