It’s US election day. Here’s what to watch

You might be excited about Election Day, dreading it, or desperate for it to be over.  Regardless, it is here. But the end of this high-drama presidential campaign on election night may not bring immediate clarity about who has won.

The race itself is unlike any other, pitting former President Donald Trump, a man who has essentially been running for president for nine years, against Vice President Kamala Harris, a woman who has been running for about 16 weeks. The contest, which began as a rare rematch between Trump and President Joe Biden, was reset after a televised debate that ended Biden's bid for reelection and paved the way for Harris' midsummer ascendance - and it took a violent turn when two would-be assassins made separate attempts on Trump's life.

More than 78 million people have already voted. And as we head into the final day of voting, polling suggests...