While people can often estimate how much they might need for 10 or 15 years of retirement, that calculation becomes more difficult for retirement that could last 20 years or more. Gary Waters/Ikon Images/Getty Images hide caption

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President Obama very likely made Democrats' midterm campaign messaging easier by dropping from his new budget a proposal that would have reduced the size of Social Security checks. Matt Rourke/AP hide caption

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President Obama prepares to depart San Francisco on Thursday. Jewel Samad/AFP/Getty Images hide caption

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President Obama in Denver on Wednesday. Jewel Samad /AFP/Getty Images hide caption

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A protester at a fiscal cliff rally on Monday in Doral, Fla. Joe Raedle/Getty Images hide caption

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House Republicans, including Speaker John Boehner (right) and Majority Leader Eric Cantor (left), said Monday they would vote to extend the payroll tax cut. Zhang Jun/Xinhua /Landov hide caption

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Senate Majority Leader Harry Reid, (D-NV) during a news conference on a payroll tax cut compromise. Manuel Balce Ceneta/AP hide caption

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