Follow live updates on the election and the vice-presidential debate here.
Democrats Joe Biden and Sen. Kamala D. Harris hold a steady lead over President Trump and Vice President Pence, with an edge of 53 percent to 43 percent among registered voters, according to the latest Post-ABC News poll. Biden also leads Trump in the key battleground of Pennsylvania.
How to vote: Find out the rules in your state. Some states have already started sending out mail ballots; see how to make sure yours counts. Absentee and mail ballots are two terms for the same thing, mostly used interchangeably. Barring a landslide, we may not have a result in the presidential election on Nov. 3. Are you running into voting problems? Let us know.
Electoral college map: Who actually votes, and who do they vote for? Explore how shifts in turnout and voting patterns for key demographic groups could affect the presidential race.
Policy: Where Biden and Trump stand on key issues defining the election.
Battlegrounds: Want to understand the swing states? Read about Michigan, Wisconsin, North Carolina, Florida, Pennsylvania,