'Extremely close’ presidential election comes down to ‘razor thin margins’ in battleground states

It’s Election Day in America and voters are casting their ballots in what is expected to be a very close presidential race. NBC News Correspondents Dasha Burns, Gabe Gutierrez, Julie Tsirkin, Blayne Alexander, Shaq Brewster and Priscilla Thompson are on the ground in the key battleground states.