In the larger pool of registered voters, the lead is flipped, with Ross ahead 49-46.
The CNN/ORC poll was conducted Oct. 10-15 and surveyed 788 likely voters, with a margin of error of plus or minus 3.5 percent.
CNN/ORC previously surveyed likely voters in the North Carolina Senate race on August 18-23, which showed Burr with a five point lead, 50-45.
TPM's Senate Scoreboard rates the North Carolina race as "Leans Republican."
TPM's PollTracker Average has Burr ahead of Ross by 2.5 percentage points, 48.5 to 46.