Do know how presidential math works? Ever played out what-if scenarios that could change the course of history?

Rand McNally has a website that puts you in control of the Electoral College.

Play The Election is geared toward civic classes to teach about presidential election math, where the magic number is 270 electoral votes, not necessarily who wins the popular vote.

You can also explore previous presidential electoral maps all the way back to 1960, when John F. Kennedy defeated Richard Nixon.

Another site, 270 To Win gives users a snapshot of where the electoral map stands if the election were held today. It also gives probabilities and winning scenarios for each party.