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U.S. Sen Jeanne Shaheen D-N.H. speaks during a forum Monday, Aug. 13, 2012 in Concord, N.H., aimed at improving trade between New Hampshire and eastern Canadian provinces. Organized by the New Hampshire-Canada Trade Council, Monday's conference includes sessions on trade opportunities in the areas of education, energy, manufacturing, public-private partnerships and women's entrepreneurship. (AP Photo/Jim Cole)

U.S. Sen Jeanne Shaheen D-N.H. speaks during a forum Monday, Aug. 13, 2012 in Concord, N.H., aimed at improving trade between New Hampshire and eastern Canadian provinces. Organized by the New Hampshire-Canada Trade Council, Monday's conference includes sessions on trade opportunities in the areas of education, energy, manufacturing, public-private partnerships and women's entrepreneurship. (AP Photo/Jim Cole)

Senate's Democratic leading ladies

A record number of 12 Democratic women are currently in the Senate. Sen. Barbara Mikulski, who led the podium program highlighting Democratic women candidates for Senate in 2012 at the Democratic National Convention, is the longest-serving woman in the history of Congress. Here's a look at the other leading ladies.