Wall Street rallies with US Election Day underway; Dow Jones rises over 2%

The S&P 500 was up 57.67 points, or 1.74%, at 3,367.91, and the Nasdaq Composite was up 171.87 points, or 1.57%, at 11,129.49

US stocks rallied on Tuesday as Americans voted in one of the country's most turbulent presidential elections and investors bet it would be decided without a drawn-out process, leading to a swift deal on more fiscal stimulus.

Democrat Joe Biden's lead over Republican President Donald Trump in national opinion polls has raised expectations for a decisive outcome and a post-election stimulus package that would make good on Biden's promises of infrastructure spending.

Some analysts said the market's strong gains reflected a rebound from a selloff last week, the biggest weekly percentage decline for the S&P 500 in over seven months.

"As much as