As the debate over gun control heats up on Capitol Hill, a new pollTuesday revealed that more voters consider a political endorsement from the National Rifle Association to be a negative factor than a positive one.

The poll, by Public Policy Polling, found that 39 percent of respondents said they would be less likely to vote for a candidate who was endorsed by the NRA. By contrast, only 26 percent said having the NRA's support would make them more likely to vote for someone. Another 32 percent said it wouldn't affect how they voted. Among independents -- a coveted voting bloc that often decides national elections -- 41 percent considered an NRA endorsement a negative, as opposed to 27 percent who said they viewed it as a positive.