Transcript of How is NBC News able to call some states so quickly after polls close?

We are able to call some states at poll close and some shortly after, and it's two scenarios. In one scenario, in races that are blow-out races where there's a lot of spread, we actually can use the Exipol to project those races, but that's a limited group of states. In other states, states like Florida and Texas, those are states that actually have split poll closes. What that means is that part of the state closes earlier. In Florida, for example, a lot of the state closes at seven o'clock. By the time the eight o'clock poll close comes, we might have 80% of the vote, and that might be enough to actually project a State like Florida. The same is true in Texas, where we might have 40% of the State when the nine o'clock poll close happens. In those instances, we have some pretty good models by then. If they're spread, we can possibly project those races.