We had this in Mass. It passed by a wide margin in every district. People understand that corporations != people. A corporation is a machine, a golem that we create to do our bidding. There's no need to treat them as anything more than that.
This might be useful if people generally understood the rational behind Citizens United. As of now? I'm skeptical.
In a recent poll (9/2015) 78% of 1001 persons polled said the decision by SCOTUS was bad. Citation: