The Four States That Will Make or Break Democrats' Senate Hopes

For the party to win back the Senate majority, it will need to turn its fortunes around in crucial battleground states.

U.S. Rep. Joe Sestak (D-PA), standing onstage with his wife Susan and daughter Alex, concedes the Pennsylvania Senate race to Republican Pat Toomey November 3, 2010 at the Radnor Hotel in St. Davids, Pennsylvania. With 91 percent of the vote counted, Toomey led Sestak 51 percent to 49 percent.
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