PHILADELPHIA (AFP) - Democratic presidential nominee Hillary Clinton on Monday night (Nov 7) made a final pitch to tens of thousands of voters at a massive rally in Philadelphia, urging them to reject her "loose cannon" opponent, Republican Donald Trump.

"There is a clear choice in this election, a choice between division or unity," Mrs Clinton said at the rally, a show of political force with her husband Bill, President Barack Obama and First Lady Michelle at her side.

"Between an economy that works for everyone or only those at the top, between strong, steady leadership or a loose cannon who could put everything at risk," she said.

About 40,000 people flooded Independence Mall in Philadelphia for the rally, a campaign aide said.

Rockers Bruce Springsteen and Jon Bon Jovi were also on the programme for the event in the City of Brotherly Love, the next-to-last rally on the Democratic White House hopeful's agenda for her final day of campaigning.

The attendance set a new record for Mrs Clinton, with the previous high point a rally in Ohio that drew 18,500 people, a campaign aide told reporters travelling with the candidate.

The 69-year-old former secretary of state and her Republican rival spent Monday crisscrossing the key battleground states to drum up last-minute support on the eve of Election Day.

Mrs Clinton - who hopes to become America's first woman president - will wrap up her night with a midnight rally in Raleigh, North Carolina.

Mr Trump, who made stops earlier in the day in Florida, North Carolina and Pennsylvania, planned to make his final campaign pitches to voters in New Hampshire and Michigan.