Aiming to win

One of the most powerful lobbies in Washington, the National Rifle Association ranks among the largest campaign contributors. In the 2010 midterm elections, the NRA spent $6.7 million, with 98 percent of it benefiting Republican candidates. The NRA has spent nearly $75 million on campaigns in the past 20 years, and lawmakers have come to fear the group's 4 million members.

One of the most powerful lobbies in Washington, the National Rifle Association ranks among the largest campaign contributors.

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