In a recently released national poll by Reuters, participants were asked to vote between Republican candidate Donald Trump and Democratic candidate Hillary Clinton. The survey results reveal a surprising neck-and-neck disparity.

Hillary led by 1 percentage points with 41% of respondents’ pick, while Trump came considerably close with 40%. 19% of participants in the national survey chose not to answer. The poll had a credibility interval of about 3 percentage points, meaning it is way too close to tell who truly had the upper lead in the poll.

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With Ted Cruz and John Kasich knocked out of the race for the GOP, and Bernie Sanders’ campaign beginning to lag behind Hillary’s delegate wins, the two are in for a tight race. However, previous polls conducted by Reuters months ago showed Hillary had higher percentage point ratings in the double digits. Clearly, Trump’s support is gaining heavier momentum now that he is the sole GOP nominee.