One last push from Kamala, Trump before presidential election today

Both are campaigning in Pennsylvania, signifying its importance to enter the White House

BITTER rivals Kamala Harris and Donald Trump embark on a final frenzied campaign blitz on Monday with both hitting must-win Pennsylvania on the last day of the tightest and most volatile US presidential election in memory.

Republican Trump has promised a "landslide" as he seeks a sensational return to the White House, while Democrat Harris said the "momentum" was on the side of her bid to be America's first woman president.

But the polls suggest a different story on the eve of Election Day - total deadlock in surveys nationally and in the seven swing states where the result is expected to be decided.

Now a race of dramatic twists, including two bids to kill Trump and Harris's shock late entrance, is coming down to the most viciously fought-over battleground.