The National Rifle Association is buying airtime on Arkansas radio stations to defend Democratic Sen. Mark Pryor's vote against gun purchase background checks proposed by President Barack Obama.
The NRA said the ad will run Wednesday through June 25 in a number of state media markets.
The 60-second spot mentions the 2008 murder of Arkansas Democratic Party Chairman Bill Gwatney and says nothing in the legislation Pryor voted against would have prevented the killing.
A gun control group co-founded by New York Mayor Michael Bloomberg, Mayors Against Illegal Guns, ran a 30-second ad in May that attacked Pryor for his vote. The ad didn't mention Gwatney by name but the group referred to him in a news release. Pryor called the ad "disgusting" and said it politicized a friend's death.