Donald Trump Donald John TrumpHouse committee believes it has evidence Trump requested putting ally in charge of Cohen probe: report Vietnamese airline takes steps to open flights to US on sidelines of Trump-Kim summit Manafort's attorneys say he should get less than 10 years in prison MORE and Hillary Clinton Hillary Diane Rodham ClintonSanders: 'I fully expect' fair treatment by DNC in 2020 after 'not quite even handed' 2016 primary Sanders: 'Damn right' I'll make the large corporations pay 'fair share of taxes' Former Sanders campaign spokesman: Clinton staff are 'biggest a--holes in American politics' MORE are in a statistical tie in a head-to-head match-up for the presidency, a new national poll released Wednesday finds.

The Reuters/Ipsos poll showed Clinton with 41 percent support to Trump’s 40 percent. Nineteen percent of voters are still undecided.

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Trump is surging as the GOP's presumptive nominee since Ted Cruz Rafael (Ted) Edward CruzTrump unleashing digital juggernaut ahead of 2020 Inviting Kim Jong Un to Washington Trump endorses Cornyn for reelection as O'Rourke mulls challenge MORE and John Kasich exited race. Last week, Clinton, the Democratic front-runner, led Trump by about 13 points in the same poll.

Polls are showing a race between Trump and Clinton tightening in recent days.

The two are neck and neck in Ohio, Florida and Pennsylvania, a Quinnipiac poll released Tuesday found.

But Democrats are brushing off polls showing Clinton in a dead heat with Trump, citing his low approval ratings with important groups like Hispanics and casting doubt on polls conducted at this point in the cycle.

The poll was conducted from May 6 to 10 and surveyed 1,289 likely voters online. The margin of error was 3 percentage points.