Shell's Nanuq was built especially for oil spill response cleanup in the Arctic Ocean. It can store 12,000 barrels of recovered oil. The 300-foot vessel is docked at Dutch Harbor, Alaska, for the winter. Jeff Brady/NPR hide caption

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Several federal agencies are looking into the practices and policies around offshore oil drilling. In May, the Development Driller III platform (top) was surrounded by support vessels as it drilled a relief well at the site of the Deepwater Horizon oil spill in the Gulf of Mexico. Charlie Riedel/AP hide caption

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Shirley and Kevin Leung own the Magic Rabbit Car Wash & Detail in Highlands Ranch, Colo., where they also sell gas. They say high oil prices are already hurting their bottom line. Jeff Brady/NPR hide caption

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Democratic Sen. Michael Bennet of Colorado (left) and Republican challenger Ken Buck appear on NBC News' Meet the Press, on Oct. 17. William B. Plowman/NBC NewsWire via Getty Images hide caption

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Republican Scott Tipton says his opponent, incumbent John Salazar, is too "bought in" to Washington, D.C. Jeff Brady/NPR hide caption

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Election 2010

Colorado's 3rd Is Divided, Much Like The Nation

In a vast district the size of New York State, moderate Democratic Rep. John Salazar faces a stiff challenge from Republican Scott Tipton.

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Former Rep. Tom Tancredo, the Constitution Party candidate (left), Republican candidate Dan Maes (center), and Denver Mayor John Hickenlooper, a Democrat, at a television debate last month. Tancredo's presence in the race has split the Republican vote. Ed Andrieski/AP hide caption

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The U.S. burned 138 billion gallons of gas last year. Currently, gasoline contains up to 10 percent ethanol. The ethanol industry wants to increase that to 15 percent, but the oil industry has raised concerns. Jeff Brady/NPR hide caption

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The sun sets over an oil platform waiting to be towed out into the Gulf of Mexico at Port Fourchon in Louisiana. Getty Images hide caption

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Terry Walter grows hay, wheat and corn and runs well over 2,000 cows on about 3,000 acres in Colorado. Barry Gutierrez for NPR hide caption

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Sen. Michael Bennet (D-CO) visits with a young girl as he campaigns in downtown Colorado Springs, Colo., on Aug. 9. After surviving a tough primary challenge, Bennet is now in a close race with Tea-Party-backed Republican Ken Buck. Ed Andrieski/AP hide caption

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