Bendor, Diermeier, and Ting (2003) ates significant turnout in large electorates, even when the cost of voting is relatively high. However, this article shows that significant turnout is due in part to moderating feedback in the BDT model. As an individual's probability of voting decreases from .5, moderating feedback decreases the strength of downward adjustment and increases the strength of upward adjustment in the probability of voting. This method of updating the individual probability of voting after each election inherently biases the model towards its main result of high turnout in large populations.This article also shows that moderating feedback causes unrealistic turnout behavior. Most individuals in the BDT model are casual voters. In other words, sometimes people make it to the polls and sometimes they do not, but hardly anyone in the model makes it a habit always to vote or always to stay home. This result is at odds with a substantial literature that indicates most people are habitual voters-they either always vote or always abstain (Gerber, Green, and Shachar 2003;Green and Shachar 2000;Miller and Shanks 1996;Plutzer 2002;Verba and Nie 1972).I offer an alternative model that posits a different method of reinforcement and inhibition for adjusting turnout probabilities. I show that the alternative model usually does not yield moderating feedback and then compare its behavior to the behavior of the BDT model. Both models generate significant turnout in large populations, but the model without feedback yields much more plausible levels of habitual voting among individuals. Thus, the model without feedback appears to correspond better to empirical data at both the individual and aggregate levels. (Myerson 1998;Palfrey and Rosenthal 1985). This is because a single vote becomes less and less likely to have an impact on the election as the size of the population increases. If the cost of voting is significant (e.g., the cost of learning about the candidates, going to the polls, and so on), then it is likely to dominate any benefits derived from the infinitesimal probability of affecting the outcome. Unless we assume collateral benefits like the rewarding feeling of doing one's civic duty, rational choice models yield predictions that are at odds with the reality that millions of people vote in large elections.The paradox of voting has recently caused formal theorists to move away from a rational model of choice towards a behavioral model of choice. In particular, Bendor, Diermeier, and Ting (2003; hereafter BDT) explore the possibility that reinforcement learning can explain voter turnout. Their behavioral model of turnout discards any notion that individuals are prospective optimizers. Instead, individuals are adaptive satisficers. Each person's well-being is affected by the choice to vote or abstain and the outcome of the election. If a person achieves a satisfactory level of well-being then the turnout choice is reinforced and becomes more likely in the next election. If not, the choice is inhibite...