The mayor is the player who owns the most parcels in their city. To become mayor, purchase parcels within the town border of an incorporated city. You can check city status by opening the location details screen and confirming you are in an official incorporated city.

The governor is the player who owns the most parcels in their state. To become governor, purchase parcels in your state.  The player who owns the most parcels in that state will become governor.

The president owns the most parcels in the their country. To become president, purchase parcels in your country. The player who owns the most parcels in that country will become president.

Players can hold a title in more than one region (i.e. be mayor of multiple cities).