Harris or Trump? Millions vote in tense, tight US election

The volatile, dramatic US presidential race between Kamala Harris and Donald Trump headed to an unpredictable finish Tuesday, with millions of Americans casting their votes in one of the tightest elections of modern times.

The result -- which may be known overnight or not for days -- will bring major consequences, either making Harris the first woman in arguably the world's most powerful job or handing power back to Trump and his nationalist "America First" agenda.

As voters formed long lines across the country, several bomb threats were reported at polling stations, while police at the US Capitol -- where Trump's supporters rampaged following his 2020 defeat -- arrested a man who smelled like fuel and was carrying a flare gun.

Both the FBI and Georgia secretary of state Brad Raffensperger said the bomb threats, while not credible, appeared to originate from Russia.

In a possible preview of election challenges, Trump took to social media to say there is "talk about massive cheating" in Philadelphia, the Democratic stronghold of crucial state Pennsylvania.

City Commissioner Seth Bluestein, a Republican, responded on X that there was "absolutely no truth" to the charge, calling it "disinformation."

Polls for weeks have shown a razor-thin race between Democratic Vice President Harris and Republican Trump, 78, who would be the oldest president at the time of inauguration, the first felon president and only the second to serve non-consecutive terms.

The Harris campaign reported strong turnout in Philadelphia including among Puerto Ricans, who were disparaged by a comedian at a Trump rally a week earlier.

An early exit poll by NBC News showed that the most important issue for voters was democracy -- a signature issue for Harris -- even more than the economy.

Harris, 60, would also be only the second Black and first person of South Asian descent to be president.

Harris made a late, dramatic entrance into the race when President Joe Biden dropped out in July, while Trump -- twice impeached while president -- has since ridden out two assassination attempts and a criminal conviction.

After criss-crossing the country, Harris returned to Washington where she called in to radio stations in swing states and took a few calls personally at a phone bank for voters.

"We've got to get it done. Today is voting day, and people need to get out and be active," Harris told Atlanta station WVEE-FM.

She described her opponent as "full of vengeance. He's full of grievance. It's all about himself."