The Obama administration is set to announce approval of a 1,000-megawatt solar project on federal land in Southern California, the largest in a series of solar projects given the go-ahead in recent weeks.

Republican Christine O'Donnell received the endorsement of a newly formed gun-rights group Thursday and vowed to safeguard the right to own guns if elected to the Senate.

Rep. Michael N. Castle, stunned in the Republican Senate primary in Delaware last month by a "tea party"-backed rival, has announced that he will not stay in the race as a write-in candidate.

As the electoral fog lifted after this week's primaries, the Republican Party on Wednesday began the awkward task of reaching out to "tea party"-backed winners they previously shunned.