(CNN) - Nevada voters get to do what most Americans don't: They can vote for "none of the above."
And a new survey in the deadlocked battle between Senate Majority Leader Harry Reid and Republican challenger Sharron
Angle indicates that one in ten Nevada voters are planning to do just that.
According to a CNN/Time/Opinion Research Corporation poll released Wednesday, 42 percent of likely voters in Nevada are backing Angle, who enjoys strong support from many in the Tea Party movement, with four in ten supporting Reid, the top Democrat in the Senate who's bidding for a fifth term in the chamber. Seven percent of people questioned are supporting Scott Ashjian, who is running as a Tea Party candidate, but who is shunned by many in the grassroots conservative moment, and 10 percent say they are voting for none of the candidates listed.
Angle's two point advantage over Reid is well within the survey's sampling error. Angle had a one point margin over Reid in a CNN/Time poll conducted in mid September.
The poll indicates that Angle enjoys a ten point advantage among independent voters and a 14 point advantage among men, with Reid leading by 12 points among women.
According to the survey, Angle has a five point margin with voters 65 and older. Reid's campaign has put up ads on Nevada television saying that Angle wants to get rid of Social Security, with the former state lawmaker denies.
The poll also suggests a geographical divide.
"Clark County is the region that is keeping Harry Reid's hopes alive," says CNN Polling Director Keating Holland. "That's where Las Vegas is - and also Searchlight, the tiny town that Reid grew up in - and the Democrat has an eight-point advantage there. Washoe County, home to Reno, is where Angle is from, and she has a comparable nine-point edge there. In the thinly-populated parts of the state, Angle has nearly twice as much support as Reid."
Respondents were also asked whom they would vote for if the contest were a two way race between Angle and Reid.
"It's a two-point race with Ashjian on the ballot, but it's also a two-point race when voters are asked a hypothetical question about a race with only Reid and Angle's name on the ballot," says Holland. "That suggests that Ashjian is pulling his support about evenly from both sides, rather than taking most of his support from the Republican. Only about one in ten supporters of the Tea Party movement choose Ashjian in the three-way race."
The poll also indicates that Reid holds a 43 to 32 percent advantage over Angle among the larger sampling of registered voters, with nine percent backing Ashjian and 15 percent saying they supporting none of the above.
In Nevada's gubernatorial battle, the Republican nominee Brian Sandoval holds a 56 to 33 percent advantage over Rory Reid, according to the survey. One in ten questioned say they're supporting neither candidate. Sandoval, a former federal district judge in Nevada, defeated Republican Gov. Jim Gibbons and three other candidates in the June GOP gubernatorial primary. Reid, a lawyer and commission chairman of Clark County, Nevada's largest, is also Sen. Reid's son.
"Sandoval's support is highest in the Reno area and the rural portions of the state, while Rory Reid, like his father, draws a lot of support from Clark County," says Holland. "But even there, Sandoval has a six-point edge."
According to the survey, 39 percent of likely voters in Nevada appove of the job President Barack Obama's doing in the White House, with 57 percent saying they disapprove. The president's approval rating rises to 44 percent among registered voters, with 51 percent giving Obama a thumbs down.
The CNN/Time/Opinion Research Corporation poll was conducted October 1-5, with 1,508 Nevada adults, including 1,300 registered voters and 789 likely voters questioned by telephone. The survey's overall sampling error is plus or minus 2.5 percentage points, with a sampling error of plus or minus 3.5 percentage points for likely voters.
- CNN Deputy Political Director Paul Steinhauser contributed to this report