Election law violations as campaign effort: turnout in Japan's House of Councillors elections

Electoral fraud is a form of corrupt behaviour but it is also a form of electoral behaviour. Once the grosser forms of stuffing the ballot box have been eliminated, illegal campaigning often involves precisely the same activities as does legal campaigning. What makes it electoral fraud is ‘stepping over the line’, spending X?+?Y when the legal limit is X for example. In this study we analyse the determinants of legal and illegal campaign efforts as well as the impact of such efforts on voter turnout. We use the aggregate number of election law violations per district as a measure of Y, which is normally unobserved because it is illegal and thus unreported. We further distinguish between various types of election fraud such as vote-buying and canvassing and determine their effects on turnout. We find that electoral fraud is more common in close races and when there is intraparty competition. Similarly, illegal campaign effort in general mirrors legal efforts in increasing turnout although its effects depend on the type of violation in question.