Hmmmm, well it's true that a simple Daily News poll will likely itself not spur legislative action in NY. Nevertheless, it may increase progressive media coverage, which is just one of the many building blocks to change.
Interesting to think that politicians control their constituents, and not the other way around. Maybe to some extend this is true. Still, many politicians are at their core simultaneously scared rabbits and power hungry. There's nothing like front page news to influence the amorphous politician.