NSW Opposition Leader Michael Daley says he will "not be bullied" by the NRL as new polling shows almost 60 per cent of voters are against the government building a new Sydney stadium.

Mr Daley has fired back at the NRL after its chief Todd Greenberg said he would look at moving the NRL grand final interstate if the stadiums agreement with the state government is torn up.

Exclusive Ucomms/Reachtel polling for the Herald reveals that more than 58 per cent of voters oppose or strongly oppose the state government's stadium policy, including knocking down Allianz.

About 36 per cent of people polled said they strongly supported or supported the government building new stadiums in Sydney, and 4 per cent were undecided.