On June 11, Puerto Rico votes on its future political status. During April, the Puerto Rico government added a third option, for maintaining the status quo, Commonwealth status. Originally the vote was only going to include the choice of statehood, or independence.
The Governor and Speaker of the Puerto Rico House of Representatives both strongly favor statehood. According to this story, the U.S. Justice Department required Puerto Rico to add the choice to maintain commonwealth status. Also see this story.
Here is a copy of the June 11 ballot.