involving a sample group. These mechanisms reflect the principles of liberal democracy, are procedurally efficient, and involve … private information truthfully before voting takes place. Depending on the distance between two feasible public good levels …, the optimal mechanism involves either one or two voting rounds. We show that procedural efficiency cannot be achieved by …

an experimentation group. Those mechanisms reflect the principles of liberal democracy, are prior-free, and involve a …. Conversely, we show that standard democratic mechanisms with an arbitrary number of voting rounds but no experimentation do not … differential tax treatment of experimentation group members which motivates them to reveal their private information truthfully …

We study the relation between mechanism design and voting in public-good provision. If incentive mechanisms must … the use of voting mechanisms. …