The race is closer in the battleground states that are likely to decide the winner of the Nov. 3 election, Reuters/Ipsos polling showed, while national polls put Biden well ahead of Trump.
At 9:50 a.m. ET, the Dow Jones Industrial Average was up 72.82 points, or 0.26%, at 28,381.61, the S&P 500 was up 15.01 points, or 0.44%, at 3,458.13. The Nasdaq Composite was up 70.16 points, or 0.61%, at 11,586.65.
The energy sector dropped 1.1% as oil prices fell.
Netflix Inc kicked off earnings from the Big Tech club, and was down 4.8% after it missed expectations for subscriber growth as streaming competition increased and live sports returned to television.