FILE - In this Thursday, March 22, 2012 file photo, tourists stop to watch the canopy light show at the Fremont Street Experience in Las Vegas. Despite some recent diversification, Nevada's economy is more concentrated than virtually any other state. The tourism/gambling sector accounts for more than one-quarter of Nevada's 1.14 million non-farm jobs, and 13 of the 20 largest employers are casino/hotel companies. President Barack Obama and his Republican rival, Mitt Romney, have visited the state, competing strenuously for Nevada's six electoral votes in what has become one of the most intense swing-state contests. (AP Photo/Julie Jacobson, File)

ADVANCE FOR USE SUNDAY, JULY 29, 2012 AND THEREAFTER - FILE - In this Friday, Dec. 2, 2011 photo, Boyd Gaming's multi-billion dollar stalled Echelon project sits idle on the Strip in Las Vegas. Echelon developers had planned a $5 billion resort with multiple hotel towers, a casino, restaurants and bars, but halted the project in August 2008 in hopes of waiting out the recession. (AP Photo/Isaac Brekken)

ADVANCE FOR USE SUNDAY, JULY 29, 2012 AND THEREAFTER - FILE - In this Friday, Dec. 2, 2011 file photo, a sign advertises a house for sale in The Lakes neighborhood of Las Vegas. The real estate and home-building sectors in the area are improving, but slowly. Thousands of construction workers remain jobless. Kolleen Kelley, president of the Las Vegas-area Realtors association, said her colleagues are bracing for slow progress, regardless of the election outcome. "I don't know that they're blaming any one person or one party," she said. "This is not a simple fix - it's going to take a longer period of time to get us out from under." (AP Photo/Isaac Brekken)

FILE - In this Wednesday, April 12, 2012 file photo, Las Vegas Sands Chairman and CEO Sheldon Adelson, second right, and his wife, Miriam Ochsorn, right, look at a model of the Sands Cotai Central resort during a news conference in Macau to announce the launch of the $4.4-billion complex, the company's latest bet on continued strong growth in the world's biggest gambling market. Adelson is giving tens of millions of dollars to Republican causes this election season, including a group supporting Mitt Romney. (AP Photo/Kin Cheung, File)

FILE - In this Friday, Feb. 3, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney, speaks at a campaign rally in Elko, Nev. President Barack Obama and Romney have visited the state, competing strenuously for Nevada's six electoral votes in what has become one of the most intense swing-state contests. (AP Photo/Ted S. Warren, File)

FILE - In this Friday, May 11, 2012 file photo, President Barack Obama meets with Val and Paul Keller in their home in Reno, Nev. Obama and his Republican rival, Mitt Romney, have visited the state, competing strenuously for Nevada's six electoral votes in what has become one of the most intense swing-state contests. (AP Photo/Pablo Martinez Monsivais, File)

FILE - In this Wednesday, March 21, 2012 file photo, President Barack Obama speaks after touring Sempra's Copper Mountain Solar 1 facility in Boulder City, Nev. Obama and his Republican rival, Mitt Romney, have visited the state, competing strenuously for Nevada's six electoral votes in what has become one of the most intense swing-state contests. (AP Photo/Julie Jacobson, File)

FILE - In this Tuesday, Feb. 22, 2011 file photo, Moonlite Bunny Ranch owner Dennis Hof, foreground second right, and other brothel representatives wait for U.S. Senate Majority Leader Harry Reid to speak to a joint session of the state Legislature in Carson City, Nev. Hof says business has boomed even during the recession, thanks in part to publicity from an HBO series about the enterprise. Keen on politics, Hof has surveyed his customers - he says 60 percent are Democrat, 40 percent Republican, "but the Republicans spend more." This year, he's leaning toward Romney for his business background. "I like the fact that this guy has looked at budgets, made hard cuts," Hof said. "Obama doesn't have a clue about business - he wouldn't know how to run the Bunny Ranch. Romney would." Standing, from left are Jeff Arnold and George Flint with the Nevada Brothel Owners Association, and seated from left are Bunny Love, Brooke Taylor, Hof and an unidentified brothel worker. (AP Photo/Cathleen Allison, File)

This Wednesday, July 11, 2012 photo shows Tammy Wells at the Culinary Workers Union Local 226 office in Las Vegas. The cocktail waitress at the Luxor said her tip allocation was cut by half at one point in the recession but is now on the upswing, though not yet back to its peak. Local 226 gave Obama one of his first key labor endorsements during the Democratic primary campaign in 2008, and Wells said she is sticking with the president this year. "It's very important that it's someone in touch with the common person, who knows what it's like to worry about making your house payment, about having health insurance for your child," Wells said. "Romney is not the common man." (AP Photo/David Crary)

In this Wednesday, July 11, 2012 photo, Jon Basso, owner and bartender of the Heart Attack Grill, stands in his restaurant in Las Vegas. Basso said his business weathered the recession well "because of how outlandish we are." He mimed a coin flip when asked about his presidential preference; his favored candidate had been Ron Paul, the Texas congressman outpaced by Mitt Romney. "Our whole gimmick is one massive libertarian protest," Basso said of his restaurant. "I want the Democrats to stay out of my wallet and the Republicans to stay out of my bedroom." (AP Photo/David Crary)

FILE - In this Thursday, Feb. 2, 2012 file photo, Donald Trump greets Republican presidential candidate, former Massachusetts Gov. Mitt Romney, after announcing his endorsement of Romney during a news conference in Las Vegas. President Barack Obama and Romney, have visited the state, competing strenuously for Nevada's six electoral votes in what has become one of the most intense swing-state contests. Romney's wife, Ann, is at left. (AP Photo/Julie Jacobson, File)