Former Secretary of State Hillary ClintonHillary Diane Rodham ClintonGOP rushes to cut ties to Moore Papadopoulos was in regular contact with Stephen Miller, helped edit Trump speech: report Bannon jokes Clinton got her ‘ass kicked’ in 2016 election MORE (D) is tied with New Jersey Gov. Chris Christie (R) among Iowa voters for president in 2016, according to a new poll.

The survey, conducted by Quinnipiac University, gives both potential candidates 41 percent of the vote. 

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While they each hold a substantial lead with their respective parties, they split independent voters, with Clinton taking 36 percent support and Christie taking 37 percent. Clinton wins the female vote, while Christie takes a plurality of men.

That result may change, however, if Christie continues to gain prominence nationally, as 40 percent of those polled say they don't know enough about him to have an opinion.

Though he's faced criticism from some Republicans for his relationship with and praise of President Obama, Christie is viewed favorably by 42 percent of those who do know of him and unfavorably by 16 percent.

Clinton is seen favorably by 52 percent, while 41 percent view her unfavorably.

Clinton leads Wisconsin Gov. Scott Walker (R) by seven points in a head-to-head matchup.

Another potential Democratic contender, Vice President Biden (D), substantially trails Christie in Iowa, taking 32 percent to Christie's 49 percent support. 

He also trails Walker, taking 39 percent to Walker's 42 percent.

The survey was conducted among 1,256 registered voters from July 15-17 and has a margin of error of plus or minus 2.8 percentage points.