Two parties choose redistricting plans to maximize their probability of winning a majority in the House of Representatives. In the unique equilibrium, parties maximally segregate their opponents' supporters but pool their own supporters into uniform districts. Ceteris paribus, the stronger party...

Priority service offers a menu of contingent contracts for distribution of scarce supplies. Prices inducing customers' efficient self-selection are expectations of spot prices for comparable service. Customers' selections reveal the benefit of capacity expansion. Priority service can be...