Scholars have had limited success empirically demonstrating the importance of political participation. This study shows that political participation matters because it influences political rewards. Political participation, specifically voting, acts as a political resource for geographic groups. Voting is a resource because members of Congress seek to maximize the benefits of Federal budget allocations going to their districts. Members of Congress not only try to direct resources into their districts, but they also attempt to allocate strategically those resources to the areas that provide the best return in terms of votes. Hence, areas within congressional districts that vote at higher rates will be privileged over areas that vote at lower rates. " T he blunt truth is that politicians and officials are under no compulsion to pay much heed to classes and groups of citizens that do not vote." (Key 1949, 527) Perhaps V.O. Key expressed most succinctly the understanding that certain groups are ignored by the political system because they do not or cannot participate in politics. Despite this conventional wisdom, scholars have had limited success empirically demonstrating the relationship between political participation and political rewards. Some researchers reject the notion entirely, instead claiming that because the policy preferences and attitudes of voters and nonvoters differ only at the margins, nonvoting has no clear consequence (Highton and Wolfinger 2001;Teixeira 1992;Wolfinger and Rosenstone 1980; but see Verba, Schlozman, and Brady 1995 for evidence to the contrary). The first claim lacks evidence; the second ignores how political elites react to political participation in deciding who gets what. This study offers a clear test of the hypothesis that participation influences political rewards by examining the relationship between geographic voting patterns and the allocation of federal discretionary spending to those locations. In short, it shows that voting matters.