Because the NRA had so much to do with the tragedy in Newtown.

Via Capitol Watch:

Everyone should be able to guess Sen. Murphy’s NRA rating. Nearly a third of the press releases the Senator has sent out since he took the oath of office in January have had NRA in the headline, as he’s made it his mission to take on the powerful pro-gun lobby. The latest: Murphy Urges NASCAR to Reverse Decision To Name New Race NRA 500.

Murphy wrote to NASCAR CEO Brian France Thursday asking him to knock the NRA off the sponsor list for the Sprint Cup Race Series in April. NRA is the title sponsor of the race, which will be named the NRA 500. Murphy told France that post-Newtown, aligning yourself with such an extreme position on guns is insensitive to the people of Newtown and puts you at odds with the the ‘overwhelming majority’ of the American public.

“Why take sides against the families of Newtown, Connecticut, by teaming up with the NRA in the middle of an intense legislative fight over gun laws?” Murphy asked.

Then again, if the NRA keeps spending money on car races rather than Congressional races, the legislative fight may be an easier one for Murphy to win.