It's no secret that the National Rifle Association is one of the most powerful forces in Washington. Over the years, the NRA has spent millions of dollars on lobbying efforts and elections aimed at electing pro-second amendment advocates to the House and Senate.

This begs the question - which candidates for President have received the most support from America's staunchest supporter of gun ownership? We took a look at NRA contributions over the years and found the biggest recipients at the bottom of the heap of the Republican field:

Topping the list in contributions received from the NRA is Senator Lindsey Graham (R-SC) and former Pennsylvania Senator Rick Santorum who have each received around $45,000 from the gun rights group. Santorum also benefitted from over $1.2 million in independent expenditures devoted to his election and reelection.

Neither conservative seems to be making much headway in the Presidential race however, with polls totaling less than 1% combined according to the latest RCP average. In fact of the previous GOP candidates who have received significant NRA backing, it's Ted Cruz (who has received over $10,000) that's doing the best, polling at 8.3% in Iowa and 6.2% nationally.

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