The National Rifle Assn. is about to turn up the volume on its campaign against Barack Obama, airing more ads taking him to task over his gun record. Starting as early as Sunday, the NRA will be airing a new batch of spots in more battleground states, such as Ohio, Virginia and Florida. As colleague Noam Levey reported back in June, some say the NRA is losing sway. But Democrats, who generally favor restrictions on guns, still shy away from the issue, particularly in must-win swing states.

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