Weather conditions can be one factor in how many people vote in person on Election Day.
The strongest weather in the U.S. forecast for Tuesday is in Montana where there could be blizzard conditions, but that state is not a battleground and is strongly favored to go for Donald Trump.
Key battleground states including Michigan and Wisconsin are expected to see some rainfall.
How long will it take to know the winner?
Election Day in the United States is now often considered election week as each state follows its own rules and practices for counting ballots — not to mention the legal challenges — that can delay the results. But the truth is, nobody knows how long it will take for the winner to be announced this time.
Where can I find early clues about how the contest might unfold?
Look to two East Coast battleground states, North Carolina and Georgia, where the results could come in relatively quickly. That doesn't mean we'll get the final results in those states quickly if the returns are close, but they are the first swing states that might offer a sense of what kind of night we're in for.
To go deeper, look to urban and suburban areas in the industrial North and Southeast, where Democrats have made gains since 2020.