(CNN) - The Massachusetts race for a U.S. Senate seat remains neck and neck between Republican Sen. Scott Brown and Democratic challenger Elizabeth Warren, a poll released Saturday showed.
Brown had 39% of the voters likely to cast ballots in the November election, while Warren, who leads several Democrats vying to unseat him, had 37%. Their two-point difference was well within the poll's sampling error of plus or minus 3.8 percentage points.
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The Boston Globe poll, conducted by the University of New Hampshire, is in line with recent polling which shows a race which has tightened since a February survey had Brown over Warren by nine points.
Brown has a dramatic lead among independent voters, who favor him 51% to 13%, according to the Globe poll. He is also favored by voters who say their vote is definitely decided - 53% to 46% - and is seen as more likeable, 52% to 26%.
Warren has an advantage - 37% to 43% - among those who are leaning towards a candidate. Their difference among voters who are extremely interested in the race is within the sampling error.
Despite the closeness of the race, the perception among voters is that Brown, who replaced the late Sen. Ted Kennedy in a 2010 special election, will win reelection. Of those surveyed, 52% see that outcome as likely, while only 27% expected a Warren win.
Two-thirds of voters say they are familiar with a recent storyline in the race involving Warren's description of herself as a Native American. After facing questions for weeks, Warren, a professor at Harvard University who is on leave while running for office, acknowledged to the Globe on Wednesday that she identified herself to Harvard and the University of Pennsylvania as Native American but said it did not influence their hiring decisions.
Thirty one percent of independent voters and 8% of Democrats surveyed said the reports made them less likely to vote for Warren.
The Senate race has attracted the interest of national political watchers, and five months out from the election, Massachusetts voters are apparently highly interested, too. The poll shows 83% of voters likely to vote this fall are either "extremely" or "very" interested in the race.
In the generally Democratic-leaning state, Brown has sought to portray himself as an independent, including touting bipartisan votes in two television ads.
The survey included 651 likely voters reached by telephone between May 25 and May 31.