Islip Town board member John Cochrane Jr. may be the first Republican publicly out of the box in expressing interest in running for the open Assembly seat recently vacated by new Oyster Bay Town Supervisor Joseph Saladino.

“I do have an interest,” said Cochrane, a Brightwaters resident who lives just two blocks inside the 9th District’s eastern border.

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A town board member for five years, Cochrane said he has spoken to Islip GOP chairman Bill Garbarino about running in the district that straddles the Nassau-Suffolk border.

Cochrane, 57, could follow in the footsteps of his father, John Cochrane Sr., a 24-year member of the Assembly, where he rose to ranking member on the Ways and Means Committee.

Babylon GOP chairman Anthony Pancella said he has two potential candidates for the seat, but was not ready to release any names. Nassau GOP sources said they are eying Oyster Bay Town Clerk Jim Altadonna, who is a former mayor of Massapequa Park.