To reach a majority date. As it stands now, if we went with the currently leader, that would mean picking a date when more people voted for another date.
If we can narrow down the choices, we’ll eventually get a majority vote on one of the dates (theoretically) thus the higher chance that more people can attend.
You might find that by Limiting to the top two choices, the date that was convenient for the most number of people in the first round may not be the most convenient in the second. Assuming our goals is to hone in on a date that works for the most number of people…