Just follow the above link and sign the petition. If you don't live in Florida, please forward to someone you know who does.
From No Casinos: "We oppose the proposed expansion of casinos in Florida. We believe destination resort casinos will be an assault on our quality of life, making our community less safe, cannibalizing existing businesses, causing long-term job loss, and intensifying destructive social problems."
For a good case against state-sponsored gambling in general, see the following site, from the organization Stop Predatory Gambling: