in may 2016, national poll numbers showed sanders loosing to clinton with 45% to clinton's 50% with 5% people undecided. on may 3, 2016, sanders pulled another political upset after beating clinton in the indiana primaries by six percent. earlier poll numbers showed clinton winning in indiana. on may 10, 2016, sanders won the west virginia primaries by 51.4% to clinton's 35.8%. in 2008, clinton had won that election by 66.93% to her primary challenger barack obama's 25.17%.