Hillary Clinton's Iowa edge is gone. 
 
 Bernie Sanders leads the former secretary of state for the first time among Iowa Democrats likely to caucus in February, according to a new Quinnipiac University poll unveiled Thursday morning — the latest in a string of surveys that show a tightening race in the Hawkeye State. 
 
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 The Vermont senator's advantage is within the margin of error — he took 41 percent compared with Clinton's 40 percent — and another 12 percent said they would support Vice President Joe Biden, who has yet to declare his 2016 intentions. (Former Maryland Gov. Martin O'Malley picked up 3 percent, while no other candidate registered above that mark, and 3 percent were undecided.) 
 
 But the shift is a significant one, coming on the heels of polls showing Sanders edging Clinton in New Hampshire, too. Together, the results suggest a candidate reeling from the controversy over her emails and struggling to put down a rebellion on her left flank. 
 
 While Clinton remains the front-runner for the nomination, and pollsters caution against reading too much into one survey, the results reflect serious movement for Sanders: He trailed the former secretary of state by a 52-33 percent margin in Quinnipiac's last poll of Iowa's likely Democratic caucus-goers, in July. 
 
 Clinton fared better in the latest NBC News/Marist polling of Iowa released last weekend, drawing 48 percent to Sanders' 37 percent. (With the vice president in the mix, Clinton stood at 38 percent, Sanders at 27 percent and Biden at 20 percent.) 
 
 Thursday's less favorable results are unlikely to surprise many in her Brooklyn headquarters: People close to Clinton's camp have recently been warning that Sanders could win both Iowa and New Hampshire before her massive organizing infrastructure kicks in among the next wave of nominating contests on March 1, when Clinton hopes to sew up the nomination. Her allies have also long noted that no non-incumbent candidate has broken the 50 percent mark in the Iowa caucuses other than Iowa's own Tom Harkin in 1992. 
 
 But the new Quinnipiac poll is nonetheless likely to send shockwaves through the Democratic establishment, which is increasingly nervous about Clinton's inability to put the email flap to rest, and worried about her seeming difficulty connecting with voters. 
 
 The fact that Thursday's result effectively shows a tie will hardly quiet the doubters, particularly given Clinton's heavy investment in her Iowa field operation — she has 78 paid organizers in the state, compared with more than 50 for Sanders — and her consistent lead until now. 
 
 A wide range of donors and strategists close to Clinton have expressed their dissatisfaction with her response to questions about her email use. But many in and around the Brooklyn headquarters said on Tuesday and Wednesday that Clinton's forthright apology — she told ABC News' David Muir on Tuesday, "That was a mistake. I’m sorry about that. I take responsibility." — could help stanch the bleeding. 
 
 Clinton supporters can take some solace in her enduring advantage among Iowa's women. Clinton leads Sanders to 49 percent to 35 percent among female likely caucus-goers, with 9 percent for Biden; though among men, Sanders leads 49 percent to 28 percent, with 16 percent for Biden. 
 
 And she remains popular with Iowa Democrats as a whole. Likely caucus participants said they have a favorable view of Clinton by 76 percent to 20 percent, earning trustworthiness marks of 64 percent to 30 percent and 78 percent to 18 percent saying she cares about their problems. By a count of 92 percent to 7 percent, voters said the former secretary of state has strong leadership qualities and 89 percent said she had the right temperament to tackle an international crisis, compared with 9 percent who did not think so. 
 
 But Sanders fares better. He drew a higher net favorability rating of +72 points (78 percent to 6 percent), and a higher share (86 percent to 4 percent) of those saying he is trustworthy than they did of Clinton. By a count of 85 percent to 5 percent, people said the senator cares about their issues. Asked about Sanders' leadership qualities, 76 percent said they were strong, compared to 9 percent who said they were not. On his temperament in times of crisis, voters approved of him by 65 percent to 15 percent. 
 
 Biden drew a net favorability rating of +70 points (79 percent to 9 percent), while 91 percent said he is honest and trustworthy, compared to 5 percent who did not think so. By a count of 84 percent to 11 percent, likely caucus-goers said Biden cares about the needs and problems of people like them. On the leadership front, 81 percent to 14 percent gave him high marks, while in terms of his ability to handle crises, 81 percent to 13 percent said they approved of his capabilities. 
 
 A majority of those surveyed — 54 percent to 33 percent — said that they would rather the party's candidate have experience in Washington than not. 
 
 The poll was conducted in the weeks around Labor Day, from Aug. 27-Sept. 8, surveying 832 likely Democratic caucus participants in the Hawkeye State via landlines and cellphones, with a margin of error of plus or minus 3.4 percentage points. ||||| (CNN) Bernie Sanders' lead over Hillary Clinton in New Hampshire is on the rise, with the Vermont senator leading the former secretary of state by 27 points, 60% to 33%, a new CNN/WMUR poll has found . 
 
 The new poll, mostly conducted before Sunday night's debate, found Sanders' support has grown by 10 points since a late-November/early December CNN/WMUR poll , which found Sanders holding 50% to Clinton's 40%. 
 
 New Hampshire Democrats' views on the race are solidifying as well, with 52% saying they have definitely decided who they will support, up from 36% who felt that way in early December. Among those voters, Sanders holds an even broader 64% to 35% lead. 
 
 But the Vermont senator's support rests heavily on groups whose participation in New Hampshire primaries is less reliable -- notably younger voters and those who aren't registered Democrats. 
 
 There are some signs in the poll that the increasingly contested Democratic race is gaining attention among the state's undeclared voters, who are not registered as members of any party and are able to choose which party's primary they will participate in. In the December poll, 38% of undeclared voters who said they planned to vote said they would likely participate in the Democratic primary, a figure that is up to 48% in the new poll. 
 
 Those undeclared voters are critical to Sanders' support: 70% in the new poll say they plan to vote for him, 25% Clinton. Among registered Democrats, it's 50% Sanders to 41% Clinton. Still, that represents an increase for Sanders among registered Democrats. The December poll found him trailing Clinton, 47% to 40%, among that group. 
 
 Sanders' rise in the poll comes as New Hampshire voters' focus on national security has faded. 
 
 The previous poll -- conducted in the aftermath of the terrorist attack in Paris and as the attack in San Bernardino, California, unfolded -- found 23% of likely Democratic voters calling foreign policy and national security their top issue. That faded to 13% in the new poll, while the share naming the economy and jobs their top priority has climbed from 18% to 26%. 
 
 On the economy, New Hampshire voters now clearly give Sanders the edge over Clinton as the candidate more trusted to handle it: 57% say Sanders would best handle it vs. 33% for Clinton. 
 
 That's a massive shift since last summer, just as Sanders' campaign began to gain traction. In that poll, 37% said they preferred Clinton on the economy, 28% Sanders, and 22% were unsure which candidate would best handle that issue. In the new poll, Clinton maintains a broad lead over Sanders as the more trusted candidate when it comes to ISIS, 55% Clinton to 26% Sanders, about the same as in early December. 
 
 Sanders also has astonishingly high favorability ratings among those likely to vote in New Hampshire's Democratic primary, and is broadly seen as the candidate with the "personal characteristics and qualities that you think a president should have." 
 
 Overall, 91% say they have a favorable view of Sanders, while just 2% have an unfavorable opinion. That's improved since December, when 83% had a positive take on the neighboring state's senator. Almost 6-in-10 say they see Sanders as the more presidential candidate in the field, compared to 33% for Clinton. 
 
 While Clinton is also viewed positively, her numbers lag well behind Sanders' ratings, with 65% saying they have a favorable impression of the former secretary of state. The poll suggests Clinton continues to be dogged by questions about her honesty, with the share saying she is the least honest in the field now at 55%, up from 46% in December. 
 
 The CNN/WMUR poll was conducted by the University of New Hampshire Survey Center by telephone from January 13-18. The poll includes interviews with a random sample of 927 adult residents of New Hampshire, including 420 who say they plan to vote in the Democratic presidential primary. For results among the sample of likely Democratic primary voters, the margin of sampling error is plus or minus 4.8 percentage points. ||||| Bernie Sanders has climbed to a slim lead over national frontrunner Hillary Clinton in a new Iowa poll. 
 
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 With just 20 days remaining until the first-in-the-nation caucus, a Quinnipiac University poll released today shows Sanders leading Clinton for the first time in the Hawkeye State with 49 percent support -- his highest support in any Iowa poll yet. Clinton garnered 44 percent support. 
 
 That's a 9 percentage point increase for Sanders and a 7-point drop for Clinton since the last Quinnipiac poll in Iowa almost one month ago. 
 
 Sanders' lead, which is still barely within the margin of error, is bolstered by a broad gender gap. Sanders, who just earned a critical endorsement from liberal group MoveOn, gets support from six in 10 men and leads Clinton by 31 points among that group. Meanwhile, Clinton leads among women by 16 points. 
 
 The poll comes as the Vermont senator's campaign continues to gain momentum in his neighboring state of New Hampshire. He's led recent polling there by double digits, threatening to deliver a blow to Clinton's campaign in the first two contests. 
 
 Clinton's top aide sent an email to supporters last week telling them he was "nervous" about Sanders' advertising strength in Iowa and New Hampshire. 
 
 Sanders has said the Clinton campaign is "panicky" and in "serious trouble," pointing to general election polling and asserting that he is the more electable candidate. And that argument seems to be moving the scales in Iowa: 68 percent of Democrats say he would have a good chance of winning the general election, up 11 points since December. 
 
 “Anybody can win," Clinton told reporters last night when asked whether Sanders can win the presidency. "Who would have thought Donald Trump is leading in national polls?" 
 
 Clinton saw across-the-board decreases in her ability to handle key issues in the Quinnipiac polls, down 11 points on healthcare and 7 points on foreign policy. 
 
 After Iowa and New Hampshire, Democrats will compete in Nevada and South Carolina, where the most recent polling shows Clinton maintaining a broad lead. 
 
 When questioned on the issues, Clinton holds wide advantages on terrorism and foreign policy, while Sanders holds smaller leads on domestic issues like the economy and climate change. They are about even on health care. 
 
 Roughly a quarter of Iowa Democrats think Clinton is not honest and trustworthy, doesn't care about their problems and does not share their values. Fewer than one in 10 feel the same way about Sanders on his weaker attributes like being a strong leader and having the right experience.
– A Quinnipiac poll out today brings an unwelcome milestone for Hillary Clinton: She trails for the first time in Iowa to Bernie Sanders, 41% to 40%. That's within the poll's margin of error but still a notable shift from July, when she was way out in front 52% to 33%. Previous polls have shown that Sanders also is leading in New Hampshire, and with all the usual caveats about early-state polls, the two taken together should give the Clinton camp plenty to think about. Here's a sampling of reaction: Time: Sanders' "rapid gain on Clinton in Iowa and New Hampshire reflects broader concern among liberal Democrats with economic inequality, college affordability, healthcare and campaign finance reform, issues that Sanders has trumpeted throughout his campaign." Politico: The "shift is a significant one, coming on the heels of polls showing Sanders edging Clinton in New Hampshire, too. Together, the results suggest a candidate reeling from the controversy over her emails and struggling to put down a rebellion on her left flank." CNN: "For Clinton, the poll will come as a sharp reminder of her 2008 race, when she also faltered in Iowa despite her once-inevitable nominee status." Click to read about a plan Clinton endorses—that could actually give Sanders a big edge.