on may 3, 2016, sanders won the indiana primaries with 53% to clinton's 47% of the vote. on may 7, 2016, he lost the guam caucuses with 40% to clinton's 60% of the vote. on may 10, 2016, sanders won the west virginia primaries with 51% to clinton's 36% of the vote. on may 17, 2016, sanders lost the kentucky primaries by less than 1%. on the same day, he won the oregon primaries with 55% of the vote to clinton's 46%.