it and we need to stop them. >> reporter: as you heard, many of the candidates said that climate change is the greatest threat to the united states. one thing to note, is that jay inslee did not say that. he has built his entire campaign around climate change. he was the only one to say that donald trump is the greatest threat. he said elsewhere in the debate, he is the person who is going to organizati organize us on climate change. it was surprising to hear him not say that with that answer. >> he did say that donald trump was the biggest threat, he got major applause in the room, to say the least. savannah sellers. good seeing you. thank you. it's an issue that could loom large by next november. which of the candidates won the issue? e issue?