10: Number of women arrested on Aug. 28, 1917, as they picketed the White House for the right to vote

65.9 million: Number of female voters in 2004

56.1 million: Number of male voters in 2004

16: Number of women in the U.S. Senate

100: Number of seats in the Senate

Sources: Library of Congress; USAvotenet.com; www.senate.gov