Standard models of agenda control focus on the ability of agenda setters and veto players to in uence the content of proposals. Much less attention is given to the in uence of agenda control and gate keeping power on the speed with which bills travel through a legislature. The truly dynamic aspects of formal models of politics tend to focus on costly signaling, in which delay sends a costly signal about an actors type. This is a central aspect to Tsebelis and Money (1997) in their study of intercameral bargaining, which appeals to the bargaining model of Rubinstein (1982). It is also key to the analysis by Wawro and Schickler (2004) of Senate libusters, which invokes the game theoretic literature on "wars of attrition" (see for example Fudenberg and Tirole (1986)).