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Dems face tough Senate battle as Herseth Sandlin bows out

Former Rep.

FILE - MARCH 25:  According to reports March 25, 2013, South Dakota Sen. Tim Johnson (D-SD) has announced that he will retire when his term ends in 2014.  WASHINGTON - OCTOBER 14:  Subcommittee Chairman Sen. Tim Johnson (D-SD) listens during a hearing...
FILE – MARCH 25: According to reports March 25, 2013, South Dakota Sen. Tim Johnson (D-SD) has announced that he will retire when his term ends in 2014. …Getty Images

Jessica Taylor