Alabama polls show wildly different results on election eve

What to keep in mind: As the Washington Post's Philip Bump points out, pollsters use various indicators such as historic results and enthusiasm shown by voters in prior polls, to figure out who will turn out on Election Day. There are also other factors that make it tough to determine who's going to turn out, he added:

1. This is a highly contested statewide contest with few precedents on which to base estimates.
2. It's happening under the most polarizing president in modern history.
3. Moore was already an unusual and controversial candidate prior to the allegations.

Worth noting: There's also speculation that there's a pool of voters who won't admit to pollsters they're voting for a man who's facing allegations of sexual misconduct.