To the east is unseasonable mildness. To the west, cooler temperatures are bringing snow to the Rockies. Tens of millions of Americans are flocking to polling locations across the nation on Election Day, and in some cases, the weather will be a factor for those waiting in lines outside.

Sign-up for Your Vote: Text with the USA TODAY elections team. Much of the Northeast, Southwest, and mid-Atlantic will remain dry. The weather service warned that widespread critical fire weather conditions will continue in California due to gusty winds ...

A 2007 study found that Republican-leaning voters turned out more than those voting for Democrats during rainy weather. Battleground states, including Michigan and Wisconsin, are likely to see rain on Election Day.