Ping.
Man, what is up with them lately?
I did a search on Markey and found that she was one 65 dems who signed a letter written to Eric Holder on 3/17/09 to not reinstate the so-called "Assault Weapons Ban" which sunset in 2004. She has also written or backed other pro-gun bills, as well. So gun-rights wise, she does seem to ignore the DNC's party line on civilian disarmament.
But I agree with KansasGirl's assessment that backing dems is a bad idea in the long term and broader sense, especially if there is a Repub who scores as well, RKBA-wise. This does seem like a matter of being too single-issue, and going with the greater electability chances for the incumbent.
But like I said, this is the first I heard of this, and I haven't been tracking the races in Colorado. I'm going to call the NRA-ILA and ask them about this, though.
Thanks for the ping, AAA. Back to my paying job...
They have done this all along. They are just under greater scrutiny these days due to the spread of information on the Internet.
It's not lately. The gun-banning Left has quietly and efficiently over the past 30 years gotten themselves elected to NRA slots and then brought-in fellow travelers. The NRA has become largely useless.