(CNN) - Hours before Senate Majority Leader Harry Reid and Republican challenger Sharron Angle face off in a debate for the first time, two new polls indicate that Nevada's Senate battle remains tied.
According to a Las Vegas Review-Journal and 8NewsNow survey conducted by Mason-Dixon Polling, 47 percent of likely voters support Angle, with 45 percent backing Reid, four percent undecided, two percent supporting other candidates and two percent saying they will vote for "none of the candidates," which is allowed in Nevada. Angle's two-point advantage is within the poll's sampling error.
A Suffolk University survey released Wednesday indicates that 46 percent of likely voters in Nevada support Reid, the top Democrat in the Senate, with 43 percent backing Angle, a former state lawmaker who enjoys strong support by many Tea Party activists. The other six candidates on the ballot are in the low single digits, with four percent saying they will vote for none of the candidates, and three percent undecided. Reid's three-point advantage is within the survey's sampling error.
The Suffolk University poll indicates that Angle holds a 22-point advantage over Reid among independent and non-partisan voters.
According to the poll, Nevadans are split on the job Reid's doing, with 49 percent saying they approve of how he is handling his duties as a senator, and 47 percent saying they disapprove. But only 43 percent have a favorable opinion of the four-term senator, with 54 percent saying they see him in a negative light.
Forty-one percent of people questioned say they have a favorable opinion of Angle, with 52 percent saying they hold an unfavorable opinion of her.
Reid and Angle debate for the first time Thursday night. Early voting in Nevada begins Saturday.
According to the Mason-Dixon poll, Angle has gained among Republicans and even Democrats, but Reid narrowed the gap among non-partisan voters to eight points.
"I wouldn't call it momentum so much as what you would expect to happen as undecided voters start to drift a little bit toward the non-incumbent," Mason-Dixon pollster Brad Coker tells the Las Vegas Review-Journal, regarding Angle's slight gains. "At the end of the day, if Nevada voters really want to get rid of Reid, they'll vote for just about anybody. And I've always said this race is a referendum on Reid."
The Las Vegas Review-Journal 8NewsNow poll was conducted October 11-12 by Mason-Dixon Polling, with 625 likely Nevada voters questioned by telephone. The survey's sampling error is plus or minus four percentage points.
The Suffolk University poll was conducted October 8-11, with 500 likely voters in Nevada questioned by telephone. The survey's sampling error is plus or minus 4.4 percentage points.
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Get the latest poll results here.