Banks and technology companies led stocks broadly lower on Wall Street Tuesday, reversing some of the gains the market made in a rally a day earlier.

The S&P 500 gave up 0.5%. The losses came ahead of the first debate between President Donald Trump and Democratic challenger Joe Biden.

Investors remain cautious as COVID-19 infections have started rising again as states attempt to reopen schools and factories. Crude oil fell 3.2%, taking the oil and gas sector down with it.

Technology stocks, which have long been the biggest driver of this year’s stock market moves, were mostly higher. Advanced Micro Devices, Twitter and Facebook were all up more than 1%, though they had been higher at the opening of trading. Technology shares were helping keeping the Nasdaq in better shape than other indexes.

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The Trump-Biden debate  comes as coronavirus deaths worldwide crossed 1 million. Cases in the U.S. are on the rise again as states attempt to reopen schools and factories. Tens of millions of Americans remain out of work.

Investors remain uncertain whether the recovery that happened over the summer was sustainable, and whether the newest surge of cases will be as dramatic as the one in June.

“The market needs the economy to remain open,” said Mark Hackett, chief of investment research at Nationwide. “We can handle bumpy economic data, but markets are not priced for the economy to shut back down.”

Markets are watching the November election’s impact on tax policy and how long it might take to determine the winner. The first presidential debate will likely make headlines, he said, but debates generally don’t move the markets much.

“It’s going to get attention and rightfully so, but there’s so much time and motion that’s going to happen between now and November,” he said.

Investors’ confidence has been supported by infusions of central bank support into struggling economies and hopes for development of a coronavirus vaccine.

Congress still is arguing over the size of a new support package after additional unemployment benefits expired. House Speaker Nancy Pelosi and Treasury Secretary Steven Mnuchin have agreed to hold another round of stimulus talks. However with the death of Supreme Court Justice Ruth Bader Ginsburg, Congress has redirected much of its attention to President Trump’s nominee to replace her.

“I certainly think the markets’ weakness in the past couple of weeks is partially due to the fading hopes for a deal,” Hackett said. “The market has largely come to terms with the low likelihood for a deal to get through.”

The last jobs report before the election will come out on Friday. The number is likely to be not only important for the market to determine whether re-openings are still moving forward, but politically important for both GOP and Democratic messaging heading into the election. Economists expect 850,000 jobs were created in September, with an unemployment rate of 8.2%.

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