With the Democratic primary for Nassau County executive in its final days, candidate Adam Haber has released a TV ad in which he promises to end pay-to-play politics, cut patronage and eliminate waste -- all while attached to a lie detector.

In the 30-second ad, Haber also takes a shot at Thomas Suozzi, his opponent in the Sept. 10 primary, criticizing him for raising his salary by $65,000 while serving as county executive in 2007.

"Unlike Tom Suozzi, I won't raise my salary, I'll cut it," Haber, 48, says in the ad while his left arm is attached to a polygraph machine. "If I thought Tom Suozzi could get the job done, I wouldn't be running. And that's the truth."

Suozzi, 51, who served as county executive from 2001 to 2009, declined to comment.

His campaign previously noted that a legislative task force recommended the increase because Suozzi was paid less than Suffolk's county executive.

Haber's latest ad -- his fourth of the campaign -- was released Thursday and will run on a host of channels, said campaign spokesman Galen Alexander. He declined to give the ad's cost, other than to say it was six figures.

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In the ad, Haber, a retired Wall Street trader and Roslyn school board member who is largely self-financing his campaign, answers questions from the polygraph administrator with the device seemingly indicating he's telling the truth. Haber then repeats a litany of campaign promises, including fixing Nassau's tax assessment system.

Alexander declined to comment on whether Haber actually took the lie detector test or if it was a dramatization.The winner of the primary will take on Republican County Executive Edward Mangano in November.