
Each option is an election year and will resolve YES if the office of the President of the United States remains in existence continuously from now until Election Day in that year. If for some reason a presidential election has to be rescheduled so that it doesn't occur in the usual election year, I will still resolve based on when Election Day occurs in that year, rather than the actual date of the presidential election. However, if the presidential election is rescheduled to a different dare in the same year, I will resolve based on the new election date.
This market is solely based on the existence of the office of the U.S. presidency. If the office is vacant due to, e.g., some horrific event that kills the entire line of succession, that does not count for a NO resolution. A NO resolution would require that the U.S. government abolish the presidency, or that the current U.S. regime itself cease to exist.