Abstract. We use evidence from the Second Reform Act, introduced in the United Kingdom in 1867, to analyze the impact on electoral outcomes of extending the vote to the unskilled urban population. Exploiting the sharp change in the electorate caused by franchise extension, we separate the effect of reform from that of underlying constituency level traits correlated with the voting population. Although we find that the franchise affected electoral competition and candidate selection, there is no evidence relating Liberal electoral support to changes in the franchise rules. Our results are robust to various sources of endogeneity. 4 From a political science perspective, however, a critical element of the link between franchise extension and policy outcomes is missing. In particular we know little about the political mechanism that relates changes in the franchise to the growth of government. In principle, policy changes caused by franchise extension could arise due to several 4 At the same time the link between franchise reform and fiscal policy appears not to be direct: show a non-monotonic relationship between franchise extension and the probability of adopting income tax; Lindert (1994), assesses the impact of variation in electoral rules across countries and finds little evidence that social spending increased before 1920; Scheve and Stasavage (2008) show tax rates were flat during the late nineteenth and early twentieth century, rising sharply as countries mobilized for war; and Aidt and Jensen (2009) and Husted and Kenny (1997) show that institutional tax raising capacity is an important conditioning variable.