Has Scott Brown turned out to be a blessing in disguise for congressional Democrats?

When Scott Brown scored his upset victory in January's special election to fill Edward Kennedy's Senate seat, panicked Democratic Party insiders assumed the sky was falling.

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But barely three months into his tenure, Brown has fallen out of favor with his onetime Tea Party backers, and is starting to looking like something of a silver lining for Democrats. In a no-less symbolic moment, Brown declined an invitation to appear at a Tea Party rally in Boston this week headlined by former Alaska Gov. Sarah Palin.

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