Will Big Money Save a Divided Republican Party?

In Alaska, Utah, Nevada and now New Hampshire, Tea Party-backed candidates for the US Senate have defeated party stalwarts in this year's Republican primaries. But the poster child may be Christine O'Donnell, who defeated former governor and incumbent Congressman Mike Castle this week in Delaware. Even Karl Rove calls her too “nutty” to beat Democrat Chris Coons in November, in a race that could decide which party controls the Senate.