In the United States, stock markets steamrolled Tuesday amid polling indicating Democratic nominee Hillary Clinton was likely to win the Oval Office.

As results began to show Republican nominee Donald Trump lead in key swing states such as Florida, Ohio, and even ahead in Virginia, financial markets began to panic.

Trump has pledged to pull out of long-standing trade agreements if elected and declare high tariffs on goods from Mexico and China. His message of isolationism has resonated with voters, but many experts have warned his proposals could wreck havoc on the U.S. economy and potentially even throw the country into recession.

During this whole election, investors and economists have been worried about Trumps unpredictability and his tough talk on global trade deals. According to The Washington Post, on Wall Street, the DOW Jones futures were down more than 600 points, or roughly 2 percent. The Standard & Poor’s 500-stock index sank 63 points, while Nasdaq dropped more than 100 points.

According to NBC News, gold reached $1,276.40 an ounce and 10-year U.S. Treasury yields leveled out at 1.860 percent.

The uncertainty over the outcome of this election has rattled investors around the world. According to The Washington Post, Japan’s Nikkei index plunged 200 points, or one percent, while Hong Kong’s Hang Seng index lost 416 points, or nearly 2 percent. The Mexican peso even plunged seven percent against the U.S. dollar.

With the presidential election shaping up to be a tighter race than many had expected, the markets appear to have been too certain of a Clinton victory ahead of Tuesday.