The GuardianBen Nelson's Retirement Hurts Senate Democrats' 2012 ChancesSan Francisco Chronicle(Updates with committee quote in last paragraph before Three Republicans sub-headline. For more election news: ELECT.) Dec. 28 (Bloomberg) -- The uphill climb for Democrats to defend their 53-47 Senate majority next year just got steeper with the ...Nelson says leaving Senate doesn't mean retirementSeattle Post IntelligencerNelson Says Leaving Senate Doesn't Mean RetirementNPRNelson's Retirement Hurts Senate Dems' in '12Bloombergall 848 news articles »