In House of Cards, there are several occasions that a democratic decision is reached by asking people to yell out Aye in agreement or Nay in disagreement.
There is a particularly occasion in Season 4, Ep 10, where at a democrat convention people are asked if they agree to nominate Francis Underwood as the president and Claire Underwood as the vice president.
How realistic is it?
In the TV show, the Aye vastly outnumbers the Nay but what if when the Aye and the Nay are on an even foot? How does a decision get made then?
It happens in a scene here: