Compulsory voting increased turnout even when the fines for disobeying the law were not high enough to be a real deterrent, and tended to attract voters who were uninformed, reporting low interest in politics and no party affiliation. Such voters were more likely to be women, less educated, and low income.
The researchers speculated that increasing the number of poorer or less-educated voters could have led to increased spending on social programs, but the data didn’t bear that out. They find no significant difference in government spending once citizens were compelled to vote.
In countries where voter turnout is already high, forcing more citizens to vote wouldn’t move the needle much, if at all, in terms of turnout or outcome, the researchers conclude. That may be different in countries with low turnout, such as the United States, they say, where turnout in the presidential election was a dismal 55 percent in 2012. In the US, if nonvoters were to turn out to cast their ballots, they could easily swing an election.