Hillary Clinton continues to lose ground to Donald Trump in national polling, as the latest survey from Reuters/Ipsos shows the two candidates running neck-and-neck.

The poll released Wednesday found 41 percent of likely voters supported Democratic frontrunner Clinton, and 40 percent backed Trump, with 19 percent not decided on either yet. Clinton led Trump by around 13 points in the same poll just one week ago, and thus the results represent a big jump for Trump since GOP hopefuls Ted Cruz and John Kasich withdrew from the race.

Reuters notes:

The candidates' choice of running mates could also be important. Voters surveyed in the poll said they would be more likely to support Clinton if her choice for vice president was a liberal, while Trump would help his chances if he picked someone experienced in politics and someone who is “consistently” conservative.

The Reuters/Ipsos poll did not present a match-up between Bernie Sanders and Trump, but recent surveys, including two released Tuesday, show the Vermont senator holding a more secure national lead against the former reality TV star and real estate mogul, and also doing better than Clinton against Trump in major swing states.

Still, The Hill reported Wednesday, Democrats appear to be "brushing off" such poll results.

"It's May—and I'm pretty sure no general election was ever decided in May," one Democratic strategist, who asked to remain anonymous, scoffed to The Hill.

"Folks shouldn’t read too much into these polls," added Jim Manley, a former aide to Senate Minority Leader Harry Reid (D-Nev.). "There is a long way between now and November, and I continue to believe that Donald Trump is highly radioactive when it comes to the general election."

The Hill continued:

It is all but impossible to find a Democratic strategist who believes that Clinton will lose the general election, but some do urge caution, suggesting that Trump’s appeal should not be underestimated. SCROLL TO CONTINUE WITH CONTENT Never Miss a Beat. Get our best delivered to your inbox.





“A lot of Democrats, labor people, liberals, think this is a done deal,” said Democratic strategist Brad Bannon. “And I keep saying, ‘We have underestimated Trump before, don’t do it again.’ I, personally, am cautious. Trump has a way of reaching people’s emotional gut level that neither Bernie Sanders nor Hillary Clinton have."

One person who isn't underplaying the polling is Sanders himself. "After all the votes are cast and counted and this contest moves to the Democratic National Convention in Philadelphia," he said after winning the West Virginia primary on Tuesday, "the delegates will decide which candidate is the strongest nominee to take on Donald Trump in November. All of the evidence indicates that I am that candidate."

In an email to supporters on Wednesday, Sanders campaign manager Jeff Weaver called the recent poll numbers "terrifying."

The email read in part:

For months, Bernie Sanders has out-polled Hillary Clinton against Donald Trump, and often by extraordinarily large margins. Because we must do everything we can to defeat Trump in November, our mission is to win as many pledged delegates as we can between now and June 14. Then we’re going to have a contested convention where the Democratic Party must decide if they want the candidate with the momentum who is best positioned to beat Trump, or if they are willing to roll the dice and court disaster simply to protect the status quo for the political and financial establishment of this country.