Business-oriented groups that oppose increasing the state’s minimum wage to $15 are backing Deputy Senate Majority Leader John DeFrancico in the face of a union-backed campaign that is criticizing him.

The groups — including the Onondaga County Farm Bureau, Unshackle Upstate, the Busniess Council, NFIB and the New York Association of Convenience Stores — galvanized in their support of DeFrancisco’s opposition to the wage increase.

“Many of my constituents have called my office and met with me on several occasions to express their concern that a $15/hour minimum wage could force them to lay off workers, raise consumer prices, or even close their doors for good. I am standing by my principals and standing with my constituents, who are telling me that this will hurt them and their employees badly,” DeFrancisco said in a statement.

The joint press conference in Syracuse for the number two lawmaker in the Senate comes as SEIU 32BJ begins an online campaign knocking DeFrancisco for opposing the wage hike.

DeFrancisco late last month said there’s no support for the $15 target in the Senate and knocked the proposal as a “political number.”

Gov. Andrew Cuomo has pushed hard for the minimum wage increase this year with a campaign that’s led by 1199 SEIU President George Gresham and named in honor of his late father, former Gov. Mario Cuomo.

The Senate GOP conference as a whole is yet to rule out a wage increase in some form or another, though the campaign blasting DeFrancisco could bolster opposition within the conference.