  We visualize aggregate outputs of popular multiwinner voting rules--SNTV,
STV, Bloc, k-Borda, Monroe, Chamberlin--Courant, and HarmonicBorda--for
elections generated according to the two-dimensional Euclidean model. We
consider three applications of multiwinner voting, namely, parliamentary
elections, portfolio/movie selection, and shortlisting, and use our results to
understand which of our rules seem to be best suited for each application. In
particular, we show that STV (one of the few nontrivial rules used in real
high-stake elections) exhibits excellent performance, whereas the Bloc rule
(also often used in practice) performs poorly.
