Remember the election of 2000, when the Bush-Gore battle went unresolved for a full month after the voting? That race had nothing on the campaign of 1800, which ended in an actual tie. In that year, the incumbent president, John Adams, was running against his own vice president, Thomas Jefferson. Once friends who had worked together to draft the Declaration of Independence, the two men had come to detest each other. It was one of the dirtiest campaigns ever, with Adams accused of trying to set up a monarchy in collusion with the British, while Jefferson was charged with being an atheist and spy for the French. Adding to the drama, Jefferson’s running mate, Aaron Burr, was working with the opposition to supplant Jefferson at the top of the ticket. It’s a fascinating story, well told in Adams vs. Jefferson: The Tumultuous Election of 1800.