Changes

Consider a two-dimensional case. Any policy <math>z_{i}<math> is characterized by coordinates (x_i, y_i).

*In first stage we vote on <math>x_{i}<math>. and obtain policy equal to median voters bliss point x_m. In second stage we vote on y_i and obtain policy equal to median voters bliss point y_m, so we obtain unique outcome z=(x_m, y_m)