Campaign managers worry about who will show up at the polls on Election Day. Will more Republicans come? More Democrats? Will a surge in younger voters occur this year, or will an older population cast ballots? We can actually predict with strong accuracy who is likely to vote each year, based on identified influence factors such as age, education, and income. Campaigns will often target each group of voters in different ways, spending precious campaign dollars on the groups already most likely to show up at the polls rather than trying to persuade citizens who are highly unlikely to vote.