Battleground states are counting the ballots that will decide the next US president into the early hours of Wednesday morning, after Election Day voting that largely went smoothly despite fake bomb threats that targeted multiple states.

Seventeen blue states and D.C. belong to the National Popular Vote Interstate Compact, nearing the 270 electoral votes to activate it.

Each state has its own rules for when and how to register, and one state doesn’t even require registering. Here’s what to know.

This Election Day, citizens in states across the U.S. had opportunities to vote not only on their choice for the next president but also on contentious issues including marijuana legalization and abortion.

Voter intimidation is prohibited by federal law, while voters in certain states are entitled to same-day registration and leave from work to vote.

The final day of voting in a deeply divided nation's high-stakes elections ran mostly smoothly through Tuesday afternoon, with only scattered problems at some polling locations.

After an election season marked by concerns over disinformation, foreign influence and worrisome threats to election workers and voting systems, Election Day unfolded relatively smoothly nationwide with only scattered disruptions and delays.

Election Day unfolded relatively smoothly as voters faced only scattered disruptions and delays after an election season marked by concerns over disinformation, foreign influence and threats to election workers and voting systems.