In 1799, President George Washington dies in Philadelphia, having served just over ten years in office under the Constitution's lifetime-tenure provision.
Vice-President John Adams becomes acting President. In accordance with the succession procedure laid down in Article II, Section 1 of that document, Congress is now obligated to call a special election in which its members will either confirm Adams as president for life or choose a replacement.
Adams is uncomfortable in office, especially since he faces numerous battles with Alexander Hamilton's faction of the dominant Federalist Party. However, he will remain President for most of a year, as a squabbling Congress keeps postponing the election while supporters of various candidates jockey for advantage.