City Comptroller Scott Stringer announced Tuesday that he is launching an investigation into widespread polling irregularities in the New York primaries, saying “incompetence” by the Board of Elections “puts a cloud” over the results.

In a sharply worded letter to the board, Stringer pointed to as many as 125,000 voter registrations that were mysteriously purged, poll sites that opened late and misleading notices sent out before the primary.

“The next president of the United States could very easily be decided tonight, yet the incompetence of the Board of Elections puts a cloud over these results, and it’s time that we clean up this mess,” Stringer said.