Funny, this article seems to say the exact opposite of the OP's premise:
http://www.huffingtonpost.com/2014/12/10/gun-rights-poll_n_6304740.html
http://www.huffingtonpost.com/2014/12/10/gun-rights-poll_n_6304740.html
Gun Rights Are Favored Over Gun Control For First Time In 20 Years, Poll Finds
While the partisan divide on the question remains as wide as ever, the increasing support for gun rights spans across a wide swath of demographics. Compared with last January, support for gun rights increased by 6 points among Republicans and Democrats, 7 points among independents, 8 points among whites and 10 points among African Americans.