On Nov. 8, the presidency will be decided once one of the candidates reaches 270 electoral votes. Electoral votes are cast by members of the Electoral College. That's something most people know, but what they don't know is how exactly the Electoral College works. So, we offer an explanation in our series, “Break It Down.” Then, we talk with FiveThirtyEight politics editor Micah Cohen about how the electoral college may impact this year’s presidential race.