4. Perhaps the dirtiest presidential campaign in American History concerned, at least in part, a single woman named Maria Halpin, and a candidate who was alleged to have fathered a child out of wedlock with her. Who was he?
From Quiz US Presidents and the Women Close to Them
Answer:
Grover Cleveland
The 1884 presidential campaign, perhaps the dirtiest in American history, made the 1988 Willie Horton-fest look like a Sunday-school debate. The Republicans tried to bash Cleveland about a premarital affair he had with Ms. Halpin; a child was born to her thereafter, and Cleveland supported the child, though it was clear the child may have been fathered by one of her other suitors. The Republicans had the great misfortune to have as their candidate that exemplar of Gilded Age corruption, James G. Blaine, already well known to the American public as a man notoriously lacking in either scruples or conscience. Cleveland refused to hide or "spin" the Halpin story, and was ultimately rewarded with the presidency.