Developing this morning - a massive corruption sweep in NY, with multiple arrests of local politicians.

State Sen. Malcolm Smith and city Councilman Dan Halloran were arrested this morning on charges they were plotting to rig this year’s mayoral election through fraud and bribes.

The pols allegedly formed an alliance built on cash payments and fraud to get Smith — one of the state’s top Democrats — placed on the GOP mayoral ballot, sources said.

FBI agents arrested them both at their Queens homes shortly after 6 a.m.

“I have no idea,” Halloran, in handcuffs, told a Post reporter when asked if he knew why he was being arrested.

Others arrested include the Queens and Bronx Republican chairs - and they are all being accused of trying to rig the mayoral election.

As alleged, Senator Malcolm Smith tried to bribe his way to a shot at Gracie Mansion - Smith drew up the game plan and Councilman Halloran essentially quarterbacked that drive by finding party chairmen who were wide open to receiving bribes. After the string of public corruption scandals that we have brought to light, many may rightly resign themselves to the sad truth that perhaps the most powerful special interest in politics is self-interest. We will continue pursuing and punishing every corrupt official we find, but the public corruption crisis in New York is more than a prosecutor’s problem.”

If Halloran’s name sounds familiar, it’s because he was a blowhard who allegedthat Sanitation workers purposefully slowed down snow removal during the blizzard a few years back. Investigations found no evidence of any kind of slowdown.

Smith’s name should sound familiar as well, as he was part of the breakaway Democrats in the State Senate who gave temporary control of the Senate to Republicans in a coup against Democratic leaders.

This scandal threatens to upturn the entire Republican campaign for NYC mayor, as key behind-the-scenes officials are involved and it’s entirely possible that others could find themselves perp-walked.