Too much of a good thing? Longer ballots reduce voter participation

In many democracies, citizens complain that elections do not provide palatable options - none of the candidates are particularly appealing. More candidates imply more choice, and could potentially increase participation. However, too many candidates may overburden voters and thus discourage participation. In this paper, we use election results and experimental data to show that more candidates results in less participation. Effects are apparent even when comparing ballots with two or three candidates and are not assuaged by party labels. Our results suggest that too much choice on election day can be just as bad as too little.