In a painful start to the week for the Dow and the broader market, stocks tumbled Monday as investors worry about when Washington will agree on another stimulus bill. Rising Covid-19 infections around the world as the colder seasons of the year begin in some regions are also weighing on the market. Investors are growing increasingly concerned about renewed lockdowns while the economic recovery from the pandemic remains fragile. The Dow\n \n (INDU) finished down 1.8%, or 510 points, marking its worst day in about two weeks. The broader S&P 500\n \n (SPX) closed 1.2% lower. Both the Dow\n \n (INDU) and the S&P are flirting with falling into correction territory, which is defined as a 10% drop from the peak. The Nasdaq Composite\n \n (COMP), the only index of the three that currently is in correction territory, ended only modestly lower, down 0.1%. All major stock benchmarks have posted three-straight weeks of losses. This week could be No. 4. European stock markets also traded lower Monday. While stocks are getting hammered the safe-haven US dollar, measured by the ICE US Dollar Index, was up 0.7% at the New York closing bell. US Treasury bonds, also a safety investment, are also in high demand Monday as the 10-year bond yield dipped to 0.67%. Bond prices and yields move opposite to one another. Still, there are reasons for investors to be bullish on US stocks right now. For one, the Federal Reserve has committed to keeping interest rates lower for longer, which is good for companies looking to borrow money. Many strategists also believe that Wall Street remains the most attractive stock market to invest in. So everything will be fine, right? Not so fast: There are plenty of clouds on the horizon. The gridlock in Washington has investors worried about when Congress will agree on the next – and much needed – stimulus bill to boost the economy. So far the negotiations haven’t led to much, and tensions are rising with the presidential election just six weeks away. “Sentiment in the US is also worse following Friday evening’s death of Supreme Court Associate Justice Ruth Bader Ginsburg,” wrote Macquarie global interest rates and currencies strategist Thierry Wizman in a note to clients. Washington is now arguing about whether a judge to fill Ginsburg’s seat should be voted on before the election or after. In the latter case the stakes in the presidential election become even higher and could make it more likely that the result will be contested, Wizman said. But the market has been jittery for weeks, starting with a sharp selloff primarily in tech stocks that was a rude awakening after the summer market rally. Market experts have warned that volatility will be high toward the end of the year and around the election, especially because many expect the winner won’t be known immediately.