1. America votes

It's finally time to vote.

Americans are heading to the polls Tuesday to vote for their next president and traders are closely monitoring the returns. Key battleground states, including New Hampshire, Arizona, Florida, Nevada and Pennsylvania, are in the spotlight.

According to Macroeconomics Advisers, a Clinton win would boost the S&P 500 by 2% while a Trump win would send U.S. stocks down 8%. Citigroup similarly predicted a 5% drop in stocks if Trump wins.

Either way, stocks typically sell off the day following an election - no matter which candidate wins.

For now, U.S. stock futures are holding steady and trading in European markets is muted.

Asian markets are mostly closing out the day with gains, taking their cue from a standout rally on Monday in the U.S.

2. Gold prices react to election

Gold prices inched higher during European hours on Tuesday, as financial markets awaited the outcome of the U.S. presidential election.

The safe haven asset has undergone severe market moves as developments surrounding the presidential race caused volatility.

Prices of the yellow metal rallied to a five-week high of $1,309.30 last Wednesday, as investors were rattled by signs the U.S. presidential election race was tightening.

It then sank to a one-week low of $1,278.60 on Monday as demand for safe-haven assets ebbed after the FBI said that no charges were warranted in the case of Democrat Hillary Clinton's use of a private email server.

3. Stock market movers and earnings

Priceline, ArcelorMittal: Shares in Priceline (PCLN, Tech30) are set to pop when markets open after the company reported better-than-expected earnings on Monday.

Shares in steelmaker ArcelorMittal (AMSYF) are dropping by about 6% in Europe after investors were disappointed by the latest quarterly numbers. The company noted that anti-competitive behavior in the market was a continued concern.

CVS Health (CVS), SeaWorld Entertainment (SEAS) and Valeant Pharmaceuticals (VRX) are releasing their earnings before the open Tuesday, while TripAdvisor (TRIP) is reporting after the close.

Coming later this week:

Wednesday - Viacom (VIAB), Sunoco (SUN)earnings, Megyn Kelly guest hosts with Kelly Ripa

Thursday - Macy's (M) and Disney (DIS) earnings, Singles Day in China

Friday - J C Penney (JCP) earnings

4. Crude Oil higher as Clinton leads polls

Oil prices were higher in mid-day European trade on Tuesday, extending sharp gains from the prior session as market players positioned themselves for a win by Hillary Clinton in the U.S. presidential elections.

Crude jumped more than 1% on Monday as risk appetite improved on the news that Clinton was off the hook with the FBI.

Markets have tended to see Clinton as the status quo candidate, and news favoring her bid often boosts risk appetite.

U.S. crude oil futures gained 0.40% to $45.07 at 5:58AM ET (10:58GMT), while Brent oil traded up 0.50% to $46.38.