The Late Show host Stephen Colbert devoted his entire opening monologue Thursday night to weighing in on the Democratic debate. From his perspective, the night had a clear winner: Kamala Harris. Weighing in on Harris's performance, Colbert declared: "I believe in global warming because tonight Kamala Harris was on fire!" Colbert proceeded to play a clip of Senator Bernie Sanders describing President Trump as a "phony," "pathological liar," and "a racist." After the clip concluded, Colbert proclaimed: "Oh, they understand it, sir. That's the reason why some of them voted for him."