It was one this day in 1919 that the 19th Amendment to the Constitution, giving women the right to vote, was passed by the United States Congress. Women across America voted in their first national election in November of 1920, though there was still some resistance to the idea. Some cities instituted a rule that voters would have to state their age in order to vote, with the hope that women would be discouraged enough to stay home—but it didn't seem to work!
via Writers Almanac

According to this article, 17 democrats voted against it (compared to only 8 republicans). Interesting.