Only three in 10 of those surveyed say they will definitely vote for Grimm again in November, and the pollsters say that once both candidates are profiled positively, Murphy pulls to within a 4 points of the incumbent. The survey also found that if voters were told brief negative statements about both candidates, Murphy pulls ahead — showing that if the Democratic challenger is able to raise enough money to run attack ads highlighting the investigations against Grimm, he could gain a foothold in the race.

The Grimm campaign has steadfastly denied accusations of wrongdoing, however, and has spent hundreds of thousands of dollars mounting a legal defense.

“We contacted the Justice Department and other appropriate agencies immediately after the false allegations against me first appeared in an irresponsible New York Times story in January. I look forward to a speedy resolution and am confident that I will be fully vindicated. I’ve done nothing wrong and any fair and thorough inquiry will come to the same conclusion," Grimm said in a statement to Politicker last month.

Murphy, meanwhile, has pounded his opponent over the reports.

“Michael Grimm’s struggling campaign has amassed more in legal bills in 2 months than most Staten Island families earn in 3 years,” Murphy’s campaign manager Adam Haight told City & State.

The poll was a telephone survey of 403 likely voters, with a 4.9 percent margin of error.