reporter: hillary clinton striking a grave tone, targeting minority voters in nevada by using trump s own words against him. someone who demeans women, mocks the disabled, insults latinos and african-americans. reporter: clinton also aggressively setting her sights on the red state of arizona where trump holds a five-point lead. if donald trump were to win this election, we would have a commander in chief who is completely out of his depth and whose ideas are incredibly dangerous. or maybe, heaven forbid, start a real war instead of just a twitter war. reporter: both candidates ramping up attacks. clinton calling trump, dark and devisi devisive. the presidency doesn t change who you are, it reveals who you are. immediately repealing and replacing obama care. you think hillary s going to