The poll, taken between Oct. 15 and 16 on behalf of the League of Conservation Voters, has Warren leading Sen. Scott Brown 53 percent to 44 percent. The poll consisted of 705 likely voters from Massachusetts. The margin of error is 3.7 percent
Also taking a hit in the poll was Brown's approval rating that fell to 46 percent. Of those polled, 45 percent disapproved of his job performance.
Warren has enjoyed an increase in her favorable numbers. While 52 percent of those polled have a favorable view of Warren, 43 percent had an unfavorable opinion. Another five percent were unsure.