Oct 26 (Reuters) - U.S. stocks extended their slide on Monday, setting the Dow for its worst day in more than seven weeks, as soaring coronavirus cases and a deadlock in Washington over the next fiscal relief bill raised concerns over the economy and corporate earnings.

At 12:17 p.m. ET, the Dow Jones Industrial Average was down 731.56 points, or 2.58%, at 27,604.01, the S&P 500 was down 70.49 points, or 2.03%, at 3,394.90, and the Nasdaq Composite was down 188.60 points, or 1.63%, at 11,359.68. (Reporting by Medha Singh in Bengaluru; Editing by Arun Koyyur)