The West Des Moines-based casino company that wants to operate a casino in Norwalk has contributed more than $260,000 to the Warren County gambling campaign. State campaign finance filings show Wild Rose Entertainment is the only contributor to the group backing the referendum. The group No Casino Norwalk badly trails in the fundraising. The filing shows it has raised a little less than $16,000. Warren County Citizens for Good Jobs and Wild Rose have proposed building a casino, hotel, events center and bowling alley in northwest Norwalk, near Iowa Highways 5 and 28.