on june 4, 2016, sanders lost the u.s. virgin islands caucus in a landslide. on june 5, 2016, sanders lost the puerto rico primaries. on june 7, 2016, sanders lost the primaries in new jersey, new mexico, south dakota, and california. he won the north dakota and montana primaries that day. on june 14, 2016, sanders lost the washington, d.c. primaries, the last primary of the election season, with 20% to clinton's 80%.