Hillary Clinton Hillary Diane Rodham ClintonWhat Senate Republicans have said about election-year Supreme Court vacancies Bipartisan praise pours in after Ginsburg's death Trump carries on with rally, unaware of Ginsburg's death MORE and Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE are the closest they've ever been in an online tracking poll of their hypothetical general election match-up.

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Clinton leads the presumptive GOP presidential nominee by just 2 points, 47 to 45 percent, in the SurveyMonkey Election Tracking survey released Wednesday night.

An increasing number of voters surveyed said Trump can win, 46 percent, compared to the Democratic presidential front-runner at 47 percent. Clinton held a 9-point edge last week.

Pollsters also found that nearly a third of Republicans think their party will remain divided until November, despite Trump's status as the party's presumptive nominee.

Still, a majority of those in both parties, 53 percent of Republicans and 55 percent of Democrats, think their parties will unite by November.

The online survey of 12,969 registered voters doesn't have a margin of error. It was conducted between May 23 and 29.

Broader opinion polls in the high-stakes race have drawn questions over whether they can accurately predict the match-up between Trump and Clinton.