Man and Woman
Hermaphroditism -- the condition of being born with both male and female reproductive organs -- is more common than you might think, existing in some degree in around 1 percent of the population. In 1843, when Levi Suydam, a 23-year-old resident of Salisbury, Conn., wanted to vote for the Whig candidate in a local election, the opposition party objected, saying Suydam was really a woman and therefore did not have the right to vote. A doctor examined Suydam and declared that he had a penis and was therefore a man. He voted and the Whig candidate won by a single vote.