Opponents of the Jets stadium filed a lawsuit yesterday alleging that the city used a biased poll to claim that 70% of football fans would take public transportation or walk to the stadium. Madison Square Garden, the Hell’s Kitchen Neighborhood Association, and others opposed to the stadium claim a telephone survey of Jets season-ticket holders included “push questions” calculated to skew answers to make it appear mass transit would be used more frequently than is likely.

One such question, they said, indicated the proposed 75,000-seat stadium on the far West Side would be a 15-minute walk from Penn Station.

“That’s not an easy, short walk, and that is not the way polling should be done,” said a lawyer for Gibson Dunn & Crutcher, Randy Mastro, who is representing Madison Square Garden and other opponents in the case.

The suit also alleges the city based research findings on a second telephone survey of Jets season-ticket holders even though it was found to be unreliable by the city’s own consultants.

“Now we know that the agencies’ and the Jets’ 70% transit-usage assumptions are based on two entirely invalid surveys,” said a partner at Arnold & Porter, Michael Gerrard, who represents Madison Square Garden. “These faulty polls were the foundation of the city’s and the MTA’s ‘findings’ and we believe they undermine their case.”

This suit is the second filed by opponents of the Jets stadium. In August, anti-stadium groups including Madison Square Garden and its owner, Cablevision, filed a suit claiming the city’s draft environmental-impact statement was incomplete. That suit was thrown out of court.

Supporters of the New York Sports and Convention Center, as it is formally known, dismissed yesterday’s action as another attempt to halt the stadium’s progress.

“This lawsuit is another ill-disguised and frivolous attempt by Cablevision to rehash their earlier baseless allegations, when they asked the courts last fall to prevent the City Planning Commission from conducting a public hearing regarding the proposed rezoning of the Hudson Yards area,” a spokeswoman for Mayor Bloomberg, Jennifer Falk, said in a statement.

“Frivolous, sad, and self-interested is the only way to describe the latest lawsuit funded by Cablevision to stop the development of the Hudson Yards,” the pro-stadium Hudson Yards Coalition said in a statement. “Through its lawsuit, Cablevision is not only seeking to preserve its monopoly at Madison Square Garden by blocking the construction of the New York Sports and Convention Center, but block the expansion of the Javits Convention Center, the extension of the No. 7 subway line, and the rezoning of Manhattan’s far West Side for commercial and residential purposes.”