A man climbed on stage and attempted to stab Congressman Lee Zeldin on Thursday,

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 as he delivered a stump speech in his run for New York governor, his campaign said, but the candidate was unharmed.

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Video footage posted on social media by witnesses showed an unidentified man wearing a black baseball cap quickly,

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approach Zeldin from the side of the stage at a rally in upstate New York holding a pointed weapon or implement of some kind.

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The man, who can be heard to tell Zeldin "you're done" repeatedly as he extends his arm toward the Republican candidate's face or neck.

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Zeldin pushed him away before both men tumbled to the ground as several others tried to subdue the suspect.

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A spokeswoman for Zeldin's campaign, Katie Vincentz, said on Twitter that the suspect had attempted to stab the congressman.

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Vincentz said Zeldin and members of his team were unharmed.

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